Boxing Day

Whenever another creature dies, you may have Hissing Iguanar deal 1 damage to target player or planeswalker.

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.) {1}{R}: Goblin Banneret gets +2/+0 unt...

Fiery Fall deals 5 damage to target creature. Basic landcycling {1}{R} ({1}{R}, Discard this card: Search your library for a basic land card, revea...

{1}, Sacrifice a creature: Exile the top card of your library. You may play that card this turn. (You still pay its costs. You can play a land this...

{1}{B}, Sacrifice a creature: You gain 1 life and draw a card.

Flying When Vampire Sovereign enters the battlefield, target opponent loses 3 life and you gain 3 life.

Enchant creature When Strands of Undeath enters the battlefield, target player discards two cards. {B}: Regenerate enchanted creature.

When Skinrender enters the battlefield, put three -1/-1 counters on target creature.

When Doomed Traveler dies, create a 1/1 white Spirit creature token with flying.

As an additional cost to cast this spell, sacrifice a creature. You gain life equal to the sacrificed creature's toughness. Destroy target creature...

When Seekers' Squire enters the battlefield, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherw...

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.) Whenever Graveblade Marauder deals combat damage to a player, t...

Destroy target non-Elf creature.

Target creature gets -2/-2 until end of turn.

When Carrier Thrall dies, create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add {C}."

Put a +1/+1 counter on target creature. That creature gains first strike until end of turn. You gain 2 life.

Flying When Balustrade Spy enters the battlefield, target player reveals cards from the top of their library until they reveal a land card, then pu...

{3}{U}, {T}: Exile another target creature you control, then return that card to the battlefield under your control.

Counter target spell unless its controller pays {3}.

Converge — Search your library for a creature, instant, or sorcery card with mana value less than or equal to the number of colors of mana spent to...

As an additional cost to cast this spell, exile a creature card from your graveyard.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) Whenever Jeskai Elder deals combat damage to a player,...

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) {U}: Ingenious Skaab gets +1/-1 until end of turn.

Outlast {1}{W} ({1}{W}, {T}: Put a +1/+1 counter on this creature. Outlast only as a sorcery.) Each creature you control with a +1/+1 counter on it...