Boxing Day

At the beginning of each player's upkeep, that player sacrifices an artifact, creature, or land.

{T}, Pay 1 life, Sacrifice Marsh Flats: Search your library for a Plains or Swamp card, put it onto the battlefield, then shuffle.

Whenever you sacrifice an artifact or creature, put a +1/+1 counter on Ravenous Squirrel. {1}{B}{G}, Sacrifice an artifact or creature: You gain 1 ...

Vigilance Enrage — Whenever Urban Daggertooth is dealt damage, proliferate. (Choose any number of permanents and/or players, then give each another...

{2}{W}: Adapt 1. (If this creature has no +1/+1 counters on it, put a +1/+1 counter on it.) Whenever one or more +1/+1 counters are put on Knighted...

Vigilance {5}{G}, {T}: Draw a card. This ability costs {1} less to activate for each +1/+1 counter on creatures you control.

{R}: Blazing Rootwalla gets +2/+0 until end of turn. Activate only once each turn. Madness {0} (If you discard this card, discard it into exile. Wh...

Whenever you gain life, you may pay {X}, where X is less than or equal to the amount of life you gained. If you do, draw X cards.

Magecraft — Whenever you cast or copy an instant or sorcery spell, create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it, ...

{T}, Discard a card: Up to one target creature can't be blocked this turn. Whenever Key to the City becomes untapped, you may pay {2}. If you do, d...

{2}, {T}, Sacrifice a creature: Search your library for a creature card that shares a creature type with the sacrificed creature and has mana value...

Magecraft — Whenever you cast or copy an instant or sorcery spell, each opponent loses 1 life and you gain 1 life.

You may exile a blue card from your hand rather than pay this spell's mana cost. Return target creature to its owner's hand.

Enchant creature Whenever enchanted creature deals damage to an opponent, you may draw a card.

Shatterskull Smashing deals X damage divided as you choose among up to two target creatures and/or planeswalkers. If X is 6 or more, Shatterskull S...

Whenever you gain life, each opponent loses 1 life.

Exile target artifact or creature. Its controller creates a 1/1 blue Bird creature token with flying. Foretell {U} (During your turn, you may pay {...

Flying Artifact and enchantment spells you cast cost {1} less to cast.

Enchant permanent When Rune of Sustenance enters the battlefield, draw a card. As long as enchanted permanent is a creature, it has lifelink. As lo...

Enchant creature Enchanted creature gets +1/+1 for each Elf you control and has reach. {2}{G}: Return Crown of Skemfar from your graveyard to your ...

When Palace Sentinels enters the battlefield, you become the monarch.

Other blue creatures you control get +1/+1. {U}: Target artifact creature becomes blue until end of turn. Tap an untapped blue creature you control...

Thriving Isle enters the battlefield tapped. As Thriving Isle enters the battlefield, choose a color other than blue. {T}: Add {U} or one mana of t...

When Teferi's Tutelage enters the battlefield, draw a card, then discard a card. Whenever you draw a card, target opponent mills two cards. (They p...