As Aquamorph Entity enters the battlefield or is turned face up, it becomes your choice of 5/1 or 1/5.

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 Cackling Fiend enters the battlefield, each opponent discards a card.

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

As an additional cost to cast creature spells, you may pay any amount of mana. If you do, that creature enters the battlefield with that many additional +1/+1 counters on it.

When Dream Stalker enters the battlefield, return a permanent you control to its owner's hand.

Counter target red or green spell.

Enchant creature

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it. can be paid with one mana from a snow source.)

Enchanted creature gets +3/+3 for each age counter on Glacial Plating.

Whenever a player casts a spell, they may pay . If the player does, they draw a card at the beginning of the next end step.

Counter target spell if no mana was spent to cast it.

When Priest of Gix enters the battlefield, add .

Trample

Whenever Rimehorn Aurochs attacks, it gets +1/+0 until end of turn for each other attacking Aurochs.

: Target creature blocks target creature this turn if able. ( can be paid with one mana from a snow source.)

Sea Monster can't attack unless defending player controls an Island.

You gain 3 life for each black creature target opponent controls.

: Draw a card.