Boxing Day

All Sliver creatures have first strike.

Destroy target land.

Counter target spell with mana value X. (For example, if that spell's mana cost is {3}{U}{U}, X is 5.)

{1}{G}: Regenerate this creature.

{T}: Add {G}. {1}: Add {R} or {W}.

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.) Enchanted creature has flying. (It can't be bloc...

Destroy target artifact.

When this creature leaves the battlefield, sacrifice a creature.

This creature can't attack unless defending player controls an Island.

First strike (This creature deals combat damage before creatures without first strike.) {R}: This creature gets +1/+0 until end of turn.

Rolling Thunder deals X damage divided as you choose among any number of targets.

Prevent all combat damage that would be dealt this turn. You gain 1 life for each attacking creature.

{B}: Destroy target artifact, creature, or land you control.

Prevent the next 4 damage that would be dealt this turn to any number of targets, divided as you choose. Flashback {1}{W} (You may cast this card f...

This creature can't attack or block alone.

Create a 3/3 green Elephant creature token. Flashback {6}{G}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Destroy target land. Flashback {5}{R}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

{G}, {T}, Sacrifice this creature: Destroy target enchantment.

This creature can't attack unless defending player controls an Island. {U}, Sacrifice an Island: Target land becomes an Island until end of turn.

{B}, Discard a card: Regenerate this creature. Threshold — As long as there are seven or more cards in your graveyard, this creature gets +2/+2 and...

All creatures gain menace until end of turn. (They can't be blocked except by two or more creatures.) Threshold — If there are seven or more cards ...

Sacrifice this creature: Exile target card from a graveyard.

Exile target card from a graveyard. Flashback {B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Create a 1/1 green Squirrel creature token. Flashback {1}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)