Boxing Day

Create two 1/1 white Human creature tokens. Flashback {3}{G}{W} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Draw two cards, then discard two cards. Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

For each creature, its controller sacrifices it unless they pay X life.

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.) You draw three cards and gain 3 life.

As an additional cost to cast this spell, waterbend {X}. (While paying a waterbend cost, you can tap your artifacts and creatures to help. Each one...

Choose target creature. Mill three cards, then put a +1/+1 counter on that creature for each creature card in your graveyard.

Each opponent loses X life. You gain life equal to the life lost this way.

Earthbend X, where X is the number of Forests you control. (Target land you control becomes a 0/0 creature with haste that's still a land. Put X +1...

Each creature you control gains firebending 5 until end of turn. (Whenever it attacks, add {R}{R}{R}{R}{R}. This mana lasts until end of combat.) F...

Destroy target artifact or land an opponent controls. Its controller may search their library for a basic land card, put it onto the battlefield ta...

Choose up to one target creature, then airbend all other creatures. (Exile them. While each one is exiled, its owner may cast it for {2} rather tha...

Goblin Negotiation deals X damage to target creature. Create a number of 1/1 red Goblin creature tokens equal to the amount of excess damage dealt ...

Target opponent mills eight cards. You may put an artifact card from that player's graveyard onto the battlefield under your control.

Target opponent loses life equal to the number of creatures they control. Then destroy all creatures.

Return up to six target creature cards with different names from your graveyard to the battlefield.

Creatures you control get +10/+10 and gain vigilance until end of turn.

Return up to six target creature cards with different names from your graveyard to the battlefield.

Destroy all creatures, then any number of target players each mill half their library, rounded down.

You may pay {B} rather than pay this spell's mana cost if there are thirteen or more creatures on the battlefield. Each player sacrifices thirteen ...

Destroy all creatures.

Exile all creatures and Spacecraft.

Choose odd or even. Destroy each creature with mana value of the chosen quality. Then gain control of all creatures until end of turn. Untap them. ...

Create X 1/1 red Elemental Cat creature tokens with haste. Exile them at the beginning of the next end step. Flashback—{R}{R}, Sacrifice X Mountain...

Create two 1/1 white Bird creature tokens with flying. Flashback—Tap three untapped white creatures you control. (You may cast this card from your ...