MTG Salvation

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)

R: Cavern Crawler gets +1/-1 until end of turn.

Flying

When Cavern Harpy enters the battlefield, return a blue or black creature you control to its owner's hand.

Pay 1 life: Return Cavern Harpy to its owner's hand.

Bestow 5B (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Enchanted creature gets +2/+2 and has intimidate.

As Cavern of Souls enters the battlefield, choose a creature type.

T: Add C.

T: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.

As Cavern of Souls enters the battlefield, choose a creature type.

T: Add C.

T: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can’t be countered.

As Cavern of Souls enters the battlefield, choose a creature type.

T: Add C.

T: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can’t be countered.

As Cavern of Souls enters the battlefield, choose a creature type.

T: Add C.

T: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can’t be countered.

As Cavern of Souls enters the battlefield, choose a creature type.

T: Add C.

T: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can’t be countered.

As Cavern of Souls enters the battlefield, choose a creature type.

T: Add C.

T: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.

As Cavern of Souls enters the battlefield, choose a creature type.

T: Add C.

T: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can’t be countered.

As Cavern of Souls enters the battlefield, choose a creature type.

T: Add C.

T: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can’t be countered.

As Cavern of Souls enters the battlefield, choose a creature type.

T: Add C.

T: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can’t be countered.

As Cavern of Souls enters the battlefield, choose a creature type.

T: Add C.

T: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can’t be countered.

As Cavern of Souls enters the battlefield, choose a creature type.

T: Add C.

T: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can’t be countered.

As Cavern of Souls enters the battlefield, choose a creature type.

T: Add C.

T: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can’t be countered.

As Cavern of Souls enters the battlefield, choose a creature type.

T: Add C.

T: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can’t be countered.

As Cavern of Souls enters the battlefield, choose a creature type.

T: Add C.

T: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can’t be countered.

As Cavern of Souls enters the battlefield, choose a creature type.

t: Add C

t: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.

As Paths of the Dead enters the battlefield, choose a creature type.

T: Add C.

T: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can’t be countered.

As Paths of the Dead enters the battlefield, choose a creature type.

T: Add C.

T: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can’t be countered.

When Cavern Stomper enters the battlefield, scry 2 (Look at the top two cards of your library, then b=put any number of them on the bottom of your library in any order.)

3G: Cavern Stomper can't be blocked by creatures with power 2 or less this turn.

1R: Cavern Thoctar gets +1/+0 until end of turn.

Mutate 3B

Menace

Whenever this creature mutates, each opponent discards a card.

Mutate 3B

Menace

Whenever this creature mutates, each opponent discards a card.

This spell costs X less to cast, where X is the greatest number of artifacts an opponent controls.

Flying, trample, haste

Whenever Cavern-Hoard Dragon deals combat damage to a player, you create a Treasure token for each artifact that player controls.

This spell costs X less to cast, where X is the greatest number of artifacts an opponent controls.

Flying, trample, haste

Whenever Cavern-Hoard Dragon deals combat damage to a player, you create a Treasure token for each artifact that player controls.

Flying, lifelink

When Deep-Cavern Bat enters the battlefield, look at target opponent's hand. You may exile a nonland card from it until Deep-Cavern Bat leaves the battlefield.

Flying, lifelink

When Deep-Cavern Bat enters the battlefield, look at target opponent's hand. You may exile a nonland card from it until Deep-Cavern Bat leaves the battlefield.

When Dromar’s Cavern enters the battlefield, sacrifice it unless you return a non-Lair land you control to its owner’s hand.

T: Add W, U, or B.

When Dromar's Cavern enters the battlefield, sacrifice it unless you return a non-Lair land you control to its owner's hand.

T: Add W, U, or B.

T: Add C.

T: Add U or B. Waterveil Cavern doesn't untap during your next untap step.

T: Add C.

Morph 2 (You may cast this card face down as a 2/2 creature for 3. Turn it face up any time for its morph cost.)

T: Add C.

Morph 2 (You may cast this card face down as a 2/2 creature for 3. Turn it face up any time for its morph cost.)

T: Add C.

Morph 2 (You may cast this card face down as a 2/2 creature for 3. Turn it face up any time for its morph cost.)

T: Add C.

Morph 2 (You may cast this card face down as a 2/2 creature for 3. Turn it face up any time for its morph cost.)

T: Add C.

Morph 2 (You may cast this card face down as a 2/2 creature for 3. Turn it face up any time for its morph cost.)

T: Add 1 to your mana pool.

Morph 2 (You may cast this card face down as a 2/2 creature for 3. Turn it face up any time for its morph cost.)

T: Add C.

Morph 2 (You may cast this card face down as a 2/2 creature for 3. Turn it face up any time for its morph cost.)

T: Add C.

Morph 2 (You may cast this card face down as a 2/2 creature for 3. Turn it face up any time for its morph cost.)