Boxing Day

At the beginning of your upkeep, you may exile Cosima. If you do, it gains "Whenever a land enters the battlefield under your control, if Cosima is...

At the beginning of each combat, creatures you control gain first strike until end of turn if a creature you control has first strike. The same is ...

When Filigree Familiar enters the battlefield, you gain 2 life. When Filigree Familiar dies, draw a card.

Thriving Bluff enters the battlefield tapped. As Thriving Bluff enters the battlefield, choose a color other than red. {T}: Add {R} or one mana of ...

Companion — Each nonland card in your starting deck has a different name. (If this card is your chosen companion, you may cast it once from outside...

Target creature you control deals damage equal to its power to target creature you don't control. If the creature you control has trample, excess d...

Put a +1/+1 counter and a lifelink counter on target creature.

Choose one — • Counter target red spell. • Destroy target red permanent.

Choose one — • Counter target blue spell. • Destroy target blue permanent.

Haste When Casey Jones enters, look at the top four cards of your library. You may reveal an artifact card from among them and put it into your han...

Counter target noncreature spell.

{1}, Discard a card: Until end of turn, Mondo Gecko becomes the color of your choice and gains hexproof from that color. Whenever Mondo Gecko deals...

(Gain the next level as a sorcery to add its ability.) When this Class enters, mill two cards, draw two cards, then discard two cards. {1}{U}: Leve...

Whenever Raph & Leo attack, if it's the first combat phase of the turn, untap one or two target attacking creatures. After this phase, there is...

Vigilance At the beginning of your end step, exile up to one target artifact you control and up to one target creature you control. Then return the...

Sneak {1}{W} (You may cast this spell for {1}{W} if you also return an unblocked attacker you control to hand during the declare blockers step.) Cr...

Sneak {1}{U} (You may cast this spell for {1}{U} if you also return an unblocked attacker you control to hand during the declare blockers step. He ...

Each creature you control with a counter on it can't be blocked by more than one creature. Whenever Michelangelo enters or attacks, create a Mutage...

Sneak {3}{W}{W} (You may cast this spell for {3}{W}{W} if you also return an unblocked attacker you control to hand during the declare blockers ste...

Whenever this Vehicle attacks, put a +1/+1 counter on target creature that crewed it this turn. Then if that creature is a Mutant, Ninja, or Turtle...

When this Equipment enters, tap target permanent. Equipped creature gets +1/+0 and has haste. Equip {1} ({1}: Attach to target creature you control...

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Destroy all creatures. II — Mill four cards. When you ...

Trample Whenever Genghis Frog or another Mutant you control enters, create a Mutagen token. (It's an artifact with "{1}, {T}, Sacrifice this token:...

Whenever Venus is dealt damage, put that many +1/+1 counters on her. (She must survive the damage to get the counters.) Whenever a creature you con...