From Hell - Honestly, there really isn't much to comment about on it, but for sake of symmetry, make I would make it 5 life.
Grove of Wonders
Legendary Enchantment Land - Plains Forest
As ~ enters the battlefield, exile target enchantment you own or sacrifice it.
T: Add any combination of W or G mana equal to the converted mana cost of the exiled enchantment, then return that enchantment to the battlefield.
Strength of the Earth - 3wG
Legendary Enchantment
Whenever a land enters the battlefield, creatures you control gain +1/+1 and your choice of: Trample, First Strike, or Vigilance
I really like Alignment, granted it gives you a bit of book keeping, but so does storm. Ugg.... I can see that as a finisher in a storm deck honestly, but overall the design is pretty good, it's simple and effective.
Heroic Hydra - XWG
Legendary Creature - Hydra
This enters the battlefield with X +1/+1 counters on it.
Whenever a counter is removed from this, put a 1/1 White warrior token onto the battlefield.
Remove a +1/+1 counter from this: Prevent the next 1 damage target creature, spell, or ability would deal this turn.
0/0
White - Glorious Anthem, Raise the Alarm
Blue - Dispel, Unsummon
Black - Duress, Cast Down
Red - Lightning Strike, Demolish
Green - Naturlise, Llanowar Elves
Idea Snatch - Flavor wise it just barely misses. It's more of an Idea copy, snatch implies taking something.
My take on it
Idea Snatch 1UB
Sorcery
Each opponent reveals his or her hand.
For each player, choose an instant or sorcery card, that player discards that card, then you may search your library for a card with the same name, then if you searched your library shuffle it.
Dakkon The Immortal- 3BUUW
Legendary Planeswalker - Dakkon
Whenever a creature dies, Dakkon gains a loyalty.
As long as The Blackblade is attached to Dakkon the Immortal, he becomes a 5/5 Human Soldier creature with indistructable that’s still a planeswalker. Prevent all damage that would be dealt to him.
+2: Scry 2, draw 1.
-X: Until the begining of your next turn, destroy the next X power worth of target creatures that deal damage to you or a planeswalker your control. (you choose targets when you activate this ability.)
-7: Put a Legendary Artifact - Equipment onto the battlefield named "The Blackblade" with equipped creature gains Death touch, "Whenever a creature dies put a +1/+1 counter on equipped creature.", and equip 5 and attach it to Dakkon the Immortal.
<5>
Scouring Manticore - I like it, but something about it feels off in mono-Red, it's a mass crop rotation for deserts, that's definitely green flavored. Maybe if it was R/G.
The Last - U
Legendary Creature - Avatar
When this enters the battlefield each opponant draws a card.
When this leaves the battlefield draw two cards.
2/3
Wouldn't Reality strobe read, Exile this, and enchanted creature, then return them to the battlefield with this attached to that creature? I like it. Very easy to abuse in multi player formats.
Warden of Choices - I think it is a good hatebear as it is. I would go ahead and make it a real bear though 1W. Just saying.
As for your comments I wanted it to be dangerous, but I also wanted it to feel like you wanted to use multiple creatures to crew it.
Black Alley Footpad - 1BR
Creature - Goblin Rogue Assassin
Flash
When ~ enters the battlefield sacrifice a creature, target creature gets -x/-x until end of turn, were X is equal to the sacrificed creatures power.
U: Return Black Alley Footpad to it's owners hand.
2/2
Hydra Effigy - The big problem I see with it, is crewing usually gives you a net gain. (There is an exception yes, and that isn't intended to be an offensive card.) Here is my thought in it
Hydra Effigy - 3
Blah blah blah
Trample
Crew X
If the total power you crewed with is <Some number> or greater this gains double strike.
This gains +x/+0 until end of turn, were X is equal to the power of creatures crewing it.
0/3
I think the part that doesn't feel right, is the triple activated abilities. Something about having multiple activated abilities always makes a card feel off.
Dreadnaught Bomber - 4
Artifact - Vehical
Flying
Crew 3
For Each creature that crews this, it gains +1/+0 and deals 1 damage to any target.
4/5
Thistledown Grove, I kinda like it, a couple of things, make it a legendary land - Forest, and ETBT, otherwise it's perfect as is. I love the tention between the activation and the creatures, kinda reminds me of Saporling Burst
As to your comments, yes it was a riff on phasing. You do make a good point, maybe make it: Whenever this becomes tapped, at the begining of the next end step exile this until the beginning of your next upkeep.
Chronos, Eons Incarnate - UUU3
Legendary Creature - Elemental
Warp (Whenever this becomes tapped, at the begining of the next end step exile this until the beginning of your next upkeep.)
If this would leave the battlefield for any reason, exile it until the beginning of your next upkeep instead.
UU2: Put target creature with Warp in exile onto the battlefield. You may use this ability if Chronos is on the battlefield or in Exile.
5/5
I think I may have made the second part a little clunky, but... Meh!
Share Knowledge - Kinda a heartless Summoning for instants and sorceries, I think it would be fine without the restriction, as it is, its baral on steroids, without a body.
Time Magus - UU1
Creature - Wizard
Warp (Whenever ~ becomes tapped, exile it until the beginning of your next upkeep.)
When ~ enters the battlefield tap or untap target non-land permanent.
0/1
It's not to bad, it took a second for me to clear up the templatin in my head, but... meh...
Ember Mox
Legendary Artifact - Mox
(Spells without mana costs cannot be cast.)
You may Reveal this from your hand, and discard a Red Sorcery Spell from your hand, if you do, put this onto the battlefield.
T: Add R
Soot Mox
Legendary Artifact - Mox
(Spells without mana costs cannot be cast.)
You may Reveal this from your hand, and discard two black cards, if you do, put this onto the battlefield
T: Add B
Mist Mox
Legendary Artifact - Mox
(Spells without mana costs cannot be cast.)
You may Reveal this from your hand and discard a blue instant spell, if you do put this onto the battlefield.
T: Add U
Pollen Mox
Legendary Artifact - Mox
(Spells without mana costs cannot be cast.)
You may Reveal this from your hand and discard a Green creature spell, if you do put this onto the battlefield.
T: Add G
Hope Mox
Legendary Artifact - Mox
(Spells without mana costs cannot be cast.)
You may Reveal this from your hand and discard a White Enchantment spell, if you do put this onto the battlefield.
T: Add W
Undercity Rats ; basicly plauge/relentless rats, only in reverse. I'm a big fan of the 1 rat rats deck.
<Name> WR
Enchantment
If a player would gain one or more counters,that player looses 2 life instead.
Edit: Fixed an a gamebreaking loop via. Phyrexian Unlife
Defy Fate - I think it's fine, nothing really to ground breaking.
Volthros, The Gruesome Feast - 2BB
Planeswalker [mythic]
Whenever a creature you control dies, ~ gains a loyalty counter.
{-2} Each player sacrifices a creature.
{-10} You gain an emblem that reads "Sacrifice a permanent you control: Target player loses 2 life unless he or she sacrifices a permanant, or discards a card.
(1)
Protomorph Primordial - This one just hurts my brain. I honestly think it's pretty decent overall, but makes my brain hurt.
Sharktooth Dagger 0
Artifact - Equipment
When ~ enters the battlefield sacrifice a creature or lose half of your life (Round up)
Equiped creature gains first strike and deathtouch
As long as ~ is attached to a creature, whenever a creature dies you may pay 1 life and draw a card.
Equip 3
Grove of Wonders
Legendary Enchantment Land - Plains Forest
As ~ enters the battlefield, exile target enchantment you own or sacrifice it.
T: Add any combination of W or G mana equal to the converted mana cost of the exiled enchantment, then return that enchantment to the battlefield.
Strength of the Earth - 3wG
Legendary Enchantment
Whenever a land enters the battlefield, creatures you control gain +1/+1 and your choice of: Trample, First Strike, or Vigilance
Heroic Hydra - XWG
Legendary Creature - Hydra
This enters the battlefield with X +1/+1 counters on it.
Whenever a counter is removed from this, put a 1/1 White warrior token onto the battlefield.
Remove a +1/+1 counter from this: Prevent the next 1 damage target creature, spell, or ability would deal this turn.
0/0
Blue - Dispel, Unsummon
Black - Duress, Cast Down
Red - Lightning Strike, Demolish
Green - Naturlise, Llanowar Elves
My take on it
Idea Snatch 1UB
Sorcery
Each opponent reveals his or her hand.
For each player, choose an instant or sorcery card, that player discards that card, then you may search your library for a card with the same name, then if you searched your library shuffle it.
Dakkon The Immortal- 3BUUW
Legendary Planeswalker - Dakkon
Whenever a creature dies, Dakkon gains a loyalty.
As long as The Blackblade is attached to Dakkon the Immortal, he becomes a 5/5 Human Soldier creature with indistructable that’s still a planeswalker. Prevent all damage that would be dealt to him.
+2: Scry 2, draw 1.
-X: Until the begining of your next turn, destroy the next X power worth of target creatures that deal damage to you or a planeswalker your control. (you choose targets when you activate this ability.)
-7: Put a Legendary Artifact - Equipment onto the battlefield named "The Blackblade" with equipped creature gains Death touch, "Whenever a creature dies put a +1/+1 counter on equipped creature.", and equip 5 and attach it to Dakkon the Immortal.
<5>
Lightning Blade - 3
Artifact - Equipment
You may equip this at anytime.
Equiped creature gains +2/+0 and first strike
Equip 2
The Last - U
Legendary Creature - Avatar
When this enters the battlefield each opponant draws a card.
When this leaves the battlefield draw two cards.
2/3
Warden of Choices - I think it is a good hatebear as it is. I would go ahead and make it a real bear though 1W. Just saying.
As for your comments I wanted it to be dangerous, but I also wanted it to feel like you wanted to use multiple creatures to crew it.
Black Alley Footpad - 1BR
Creature - Goblin Rogue Assassin
Flash
When ~ enters the battlefield sacrifice a creature, target creature gets -x/-x until end of turn, were X is equal to the sacrificed creatures power.
U: Return Black Alley Footpad to it's owners hand.
2/2
Hydra Effigy - 3
Blah blah blah
Trample
Crew X
If the total power you crewed with is <Some number> or greater this gains double strike.
This gains +x/+0 until end of turn, were X is equal to the power of creatures crewing it.
0/3
I think the part that doesn't feel right, is the triple activated abilities. Something about having multiple activated abilities always makes a card feel off.
Dreadnaught Bomber - 4
Artifact - Vehical
Flying
Crew 3
For Each creature that crews this, it gains +1/+0 and deals 1 damage to any target.
4/5
As to your comments, yes it was a riff on phasing. You do make a good point, maybe make it: Whenever this becomes tapped, at the begining of the next end step exile this until the beginning of your next upkeep.
Chronos, Eons Incarnate - UUU3
Legendary Creature - Elemental
Warp (Whenever this becomes tapped, at the begining of the next end step exile this until the beginning of your next upkeep.)
If this would leave the battlefield for any reason, exile it until the beginning of your next upkeep instead.
UU2: Put target creature with Warp in exile onto the battlefield. You may use this ability if Chronos is on the battlefield or in Exile.
5/5
I think I may have made the second part a little clunky, but... Meh!
Time Magus - UU1
Creature - Wizard
Warp (Whenever ~ becomes tapped, exile it until the beginning of your next upkeep.)
When ~ enters the battlefield tap or untap target non-land permanent.
0/1
Ember Mox
Legendary Artifact - Mox
(Spells without mana costs cannot be cast.)
You may Reveal this from your hand, and discard a Red Sorcery Spell from your hand, if you do, put this onto the battlefield.
T: Add R
Soot Mox
Legendary Artifact - Mox
(Spells without mana costs cannot be cast.)
You may Reveal this from your hand, and discard two black cards, if you do, put this onto the battlefield
T: Add B
Mist Mox
Legendary Artifact - Mox
(Spells without mana costs cannot be cast.)
You may Reveal this from your hand and discard a blue instant spell, if you do put this onto the battlefield.
T: Add U
Pollen Mox
Legendary Artifact - Mox
(Spells without mana costs cannot be cast.)
You may Reveal this from your hand and discard a Green creature spell, if you do put this onto the battlefield.
T: Add G
Hope Mox
Legendary Artifact - Mox
(Spells without mana costs cannot be cast.)
You may Reveal this from your hand and discard a White Enchantment spell, if you do put this onto the battlefield.
T: Add W
Undercity Rats ; basicly plauge/relentless rats, only in reverse. I'm a big fan of the 1 rat rats deck.
<Name> WR
Enchantment
If a player would gain one or more counters,that player looses 2 life instead.
Edit: Fixed an a gamebreaking loop via. Phyrexian Unlife
Volthros, The Gruesome Feast - 2BB
Planeswalker [mythic]
Whenever a creature you control dies, ~ gains a loyalty counter.
{-2} Each player sacrifices a creature.
{-10} You gain an emblem that reads "Sacrifice a permanent you control: Target player loses 2 life unless he or she sacrifices a permanant, or discards a card.
(1)
Sharktooth Dagger 0
Artifact - Equipment
When ~ enters the battlefield sacrifice a creature or lose half of your life (Round up)
Equiped creature gains first strike and deathtouch
As long as ~ is attached to a creature, whenever a creature dies you may pay 1 life and draw a card.
Equip 3