Keyword: Morph

Whenever Skirk Commando deals combat damage to a player, you may have it deal 2 damage to target creature that player 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.)

Whenever Snapping Thragg deals combat damage to a player, you may have it deal 3 damage to target creature that player 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.)

Whenever Cabal Executioner deals combat damage to a player, that player sacrifices a creature.
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Reach (This creature can block creatures with 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.)

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.)

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.)

Whenever Haunted Cadaver deals combat damage to a player, you may sacrifice it. If you do, that player discards three 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.)

Whenever Dawning Purist deals combat damage to a player, you may destroy target enchantment that player 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.)

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

Tap two untapped Elves you control: Add one mana of any color.
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 Riptide Entrancer deals combat damage to a player, you may sacrifice it. If you do, gain control of target creature that player controls. (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.)

: Prevent the next 1 damage that would be dealt to any target this 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.)

Whenever Ebonblade Reaper attacks, you lose half your life, rounded up.
Whenever Ebonblade Reaper deals combat damage to a player, that player loses half their life, rounded up.
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Flying
Whenever Silent Specter deals combat damage to a player, that player discards 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.)