Keyword: Morph

Flying
: Mistform Shrieker becomes the creature type 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.)

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 Shaper Parasite is turned face up, target creature gets +2/-2 or -2/+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.)

: Regenerate Kin-Tree Warden.
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—Return two Islands you control to their owner’s hand. (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Fathom Seer is turned face up, draw two cards.

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 Skinthinner is turned face up, destroy target nonblack creature. It can’t be regenerated.

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 Willbender is turned face up, change the target of target spell or ability with a single target.

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.

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 Icefeather Aven is turned face up, you may return another 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 Kheru Spellsnatcher is turned face up, counter target spell. If that spell is countered this way, exile it instead of putting it into its owner’s graveyard. You may cast that card without paying its mana cost for as long as it remains exiled.

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.

As Vesuvan Shapeshifter enters the battlefield or is turned face up, you may choose another creature on the battlefield. If you do, until Vesuvan Shapeshifter is turned face down, it becomes a copy of that creature, except it has “At the beginning of your upkeep, you may turn this creature 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.)

Enchant creature
Enchanted creature has deathtouch and indestructible.
Morph—Sacrifice another creature. (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
As Gift of Doom is turned face up, you may attach it to a creature.

All Saprolings get +1/+1.
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 Thelonite Hermit is turned face up, create four 1/1 green Saproling creature tokens.

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 Thousand Winds is turned face up, return all other tapped creatures to their owners’ hands.

Hooded Hydra enters the battlefield with X +1/+1 counters on it.
When Hooded Hydra dies, create a 1/1 green Snake creature token for each +1/+1 counter on it.
Morph
As Hooded Hydra is turned face up, put five +1/+1 counters on it.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
Whenever another nontoken creature you control dies, draw a card.

Trample, hexproof
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 Bane of the Living is turned face up, all creatures get -X/-X 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 Willbender is turned face up, change the target of target spell or ability with a single target.

Whenever Broodhatch Nantuko is dealt damage, you may create that many 1/1 green Insect creature tokens.
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Deathtouch
Morph—Reveal a black card in your hand. (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Ruthless Ripper is turned face up, target player loses 2 life.

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

As Vesuvan Shapeshifter enters the battlefield or is turned face up, you may choose another creature on the battlefield. If you do, until Vesuvan Shapeshifter is turned face down, it becomes a copy of that creature, except it has “At the beginning of your upkeep, you may turn this creature 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.)