Keyword: Morph

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

Morph—Sacrifice two Mountains. (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Skirk Volcanist is turned face up, it deals 3 damage divided as you choose among one, two, or three target creatures.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Riptide Survivor is turned face up, discard two cards, then draw three cards.

Morph—Pay 5 life. (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Whenever Raven Guild Master deals combat damage to a player, that player exiles the top ten cards of their library.
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Proteus Machine is turned face up, it becomes the creature type of your choice. (This effect lasts indefinitely.)

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

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

Flying
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Aven Liberator is turned face up, target creature you control gains protection from the color of your choice until end of turn.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Root Elemental is turned face up, you may put a creature card from your hand onto the battlefield.

Flying
Whenever a creature dealt damage by Soul Collector this turn dies, return that card to the battlefield under your control.
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Karona’s Zealot is turned face up, all damage that would be dealt to it this turn is dealt to target creature instead.

Flying
Whenever a creature dealt damage by Soul Collector this turn dies, return that card to the battlefield under your control.
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Weaver of Lies is turned face up, turn any number of target creatures with morph abilities other than Weaver of Lies face down.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Chromeshell Crab is turned face up, you may exchange control of target creature you control and target creature an opponent controls.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Shaleskin Plower is turned face up, destroy target land.

At the beginning of your upkeep, sacrifice Krosan Cloudscraper unless you pay .
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Defender of the Order is turned face up, creatures you control get +0/+2 until end of turn.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Patron of the Wild is turned face up, target creature gets +3/+3 until end of turn.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Bane of the Living is turned face up, all creatures get -X/-X until end of turn.

Flying
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Wingbeat Warrior is turned face up, target creature gains first strike until end of turn.

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

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Echo Tracer is turned face up, return target creature to its owner’s hand.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Bloodstoke Howler is turned face up, Beast creatures you control get +3/+0 until end of turn.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Nantuko Vigilante is turned face up, destroy target artifact or enchantment.