You may discard a Plains card rather than pay this spell's mana cost.
Destroy target artifact or enchantment.
U, Sacrifice Aether Spellbomb: Return target creature to its owner's hand.
1, Sacrifice Aether Spellbomb: Draw a card.
Flash; convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for 1 or one mana of that creature's color.)
When Angel of Salvation enters the battlefield, prevent the next 5 damage that would be dealt this turn to any number of targets, divided as you choose.
Modular 1 (This enters the battlefield with a +1/+1 counter on it. When it dies, you may put its +1/+1 counters on target artifact creature.)
Return target artifact card from your graveyard to the battlefield.
T: Target Assembly-Worker creature gets +1/+1 until end of turn.
Choose one —
• Tap two target creatures.
• Creatures don't untap during target player's next untap step.
Entwine 1 (Choose both if you pay the entwine cost.)
Reinforce 2—2W (2W, Discard this card: Put two +1/+1 counters on target creature.)
Tap five untapped Soldiers you control: Exile target creature.
Flash (You may cast this spell any time you could cast an instant.)
Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
Other white creatures get +1/+1.
Clockwork Condor enters the battlefield with three +1/+1 counters on it.
Whenever Clockwork Condor attacks or blocks, remove a +1/+1 counter from it at end of combat.
Clockwork Hydra enters the battlefield with four +1/+1 counters on it.
Whenever Clockwork Hydra attacks or blocks, remove a +1/+1 counter from it. If you do, Clockwork Hydra deals 1 damage to any target.
T: Put a +1/+1 counter on Clockwork Hydra.
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for 1 or one mana of that creature's color.)
When Conclave Phalanx enters the battlefield, you gain 1 life for each creature you control.
When Contagion Clasp enters the battlefield, put a -1/-1 counter on target creature.
4, T: Proliferate. (You choose any number of permanents and/or players with counters on them, then give each another counter of a kind already there.)
White creatures get +1/+1.
T: Add C.
W, T: Target Soldier creature gets +1/+1 until end of turn.
Return target nonland permanent and all other permanents with the same name as that permanent to their owners' hands.
2, T: You gain 5 life. Shuffle Elixir of Immortality and your graveyard into their owner's library.
+1: Create a 1/1 white Soldier creature token.
+1: Target creature gets +3/+3 and gains flying until end of turn.
−8: You get an emblem with "Artifacts, creatures, enchantments, and lands you control have indestructible."
At the beginning of your upkeep, choose one —
• Put a +1/+1 counter on target artifact creature.
• Put a charge counter on target noncreature artifact.
At the beginning of your upkeep, return an artifact you control to its owner's hand.
Multikicker 2 (You may pay an additional 2 any number of times as you cast this spell.)
Everflowing Chalice enters the battlefield with a charge counter on it for each time it was kicked.
T: Add C for each charge counter on Everflowing Chalice.
When Faerie Mechanist enters the battlefield, look at the top three cards of your library. You may reveal an artifact card from among them and put it into your hand. Put the rest on the bottom of your library in any order.
You may discard an Island card and another card rather than pay this spell's mana cost.
Counter target spell.
Affinity for artifacts (This spell costs 1 less to cast for each artifact you control.)
W, T: Tap target creature.
T: Target attacking creature gets +1/+1 until end of turn.
When Journey to Nowhere enters the battlefield, exile target creature.
When Journey to Nowhere leaves the battlefield, return the exiled card to the battlefield under its owner's control.
Juggernaut attacks each combat if able.
Juggernaut can't be blocked by Walls.
Kabira Crossroads enters the battlefield tapped.
When Kabira Crossroads enters the battlefield, you gain 2 life.
T: Add W.
When Kemba's Skyguard enters the battlefield, you gain 2 life.
Kicker 1W (You may pay an additional 1W as you cast this spell.)
When Kor Aeronaut enters the battlefield, if it was kicked, target creature gains flying until end of turn.
When Kor Hookmaster enters the battlefield, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.
When Kor Skyfisher enters the battlefield, return a permanent you control to its owner's hand.
When Loyal Sentry blocks a creature, destroy that creature and Loyal Sentry.
Master of Etherium's power and toughness are each equal to the number of artifacts you control.
Other artifact creatures you control get +1/+1.
Target creature gets +2/+2 and gains flying until end of turn.
1: Mishra's Factory becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
Sacrifice Moonglove Extract: It deals 2 damage to any target.
Reinforce 1—1W (1W, Discard this card: Put a +1/+1 counter on target creature.)
Pentavus enters the battlefield with five +1/+1 counters on it.
1, Remove a +1/+1 counter from Pentavus: Create a 1/1 colorless Pentavite artifact creature token with flying.
1, Sacrifice a Pentavite: Put a +1/+1 counter on Pentavus.
Create two 1/1 white Soldier creature tokens.
Target permanent you control gains protection from artifacts or from the color of your choice until end of turn.
First strike (This creature deals combat damage before creatures without first strike.)
At the beginning of your upkeep, sacrifice Razormane Masticore unless you discard a card.
At the beginning of your draw step, you may have Razormane Masticore deal 3 damage to target creature.
When Runed Servitor dies, each player draws a card.
As Rustic Clachan enters the battlefield, you may reveal a Kithkin card from your hand. If you don't, Rustic Clachan enters the battlefield tapped.
Destroy target nonwhite permanent.
Whenever Seasoned Marshal attacks, you may tap target creature.
(Seat of the Synod isn't a spell.)
T: Add U.
T: Put a -1/-1 counter on Serrated Biskelion and a -1/-1 counter on target creature.
6: Stalking Stones becomes a 3/3 Elemental artifact creature that's still a land. (This effect lasts indefinitely.)
T: Put a +1/+1 counter on each artifact creature you control.
Defender (This creature can't attack.)
When Stormfront Riders enters the battlefield, return two creatures you control to their owner's hand.
Whenever Stormfront Riders or another creature is returned to your hand from the battlefield, create a 1/1 white Soldier creature token.
Sunlance deals 3 damage to target nonwhite creature.
Creatures you control get +2/+2 until end of turn.
Reinforce X—XWW (XWW, Discard this card: Put X +1/+1 counters on target creature.)
Exile target creature. Its controller gains life equal to its power.
When you control no other artifacts, sacrifice Synod Centurion.
When Temple Acolyte enters the battlefield, you gain 3 life.
+1: Untap up to two target artifacts.
−X: Search your library for an artifact card with converted mana cost X or less and put it onto the battlefield. Then shuffle your library.
−5: Artifacts you control become artifact creatures with base power and toughness 5/5 until end of turn.
Draw three cards. Then discard two cards unless you discard an artifact card.
Draw two cards.
When Trinket Mage enters the battlefield, you may search your library for an artifact card with converted mana cost 1 or less, reveal that card, and put it into your hand. If you do, shuffle your library.
2, T: Tap target creature.
Triskelion enters the battlefield with three +1/+1 counters on it.
Remove a +1/+1 counter from Triskelion: It deals 1 damage to any target.