Boxing Day

({T}: Add {U} or {R}.) As Steam Vents enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of the creature's color.)...

Whenever another creature you control enters the battlefield or dies, if that creature's power is greater than Pelt Collector's, put a +1/+1 counte...

Reach Undergrowth — When Kraul Harpooner enters the battlefield, choose up to one target creature with flying you don't control. Kraul Harpooner g...

Put a +1/+1 counter on each of up to two target creatures.

Whenever you cast a red spell, if Runaway Steam-Kin has fewer than three +1/+1 counters on it, put a +1/+1 counter on Runaway Steam-Kin. Remove thr...

Target creature gets +1/+1 until end of turn for each creature you control.

Flying, lifelink

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color....

Hexproof You can't cast noncreature spells. {2}: Nullhide Ferox loses all abilities until end of turn. Any player may activate this ability. If ...

You may look at the top card of your library any time. You may play lands and cast spells from the top of your library. You can't play lands or c...

Defender Whenever you cast an instant or sorcery spell, Electrostatic Field deals 1 damage to each opponent.

Direct Current deals 2 damage to any target. Jump-start (You may cast this card from your graveyard by discarding a card in addition to paying its ...

Flying, haste At the beginning of combat on your turn, if you've cast three or more instant and sorcery spells this turn, return Arclight Phoenix ...

Whenever you surveil for the first time each turn, Whispering Snitch deals 1 damage to each opponent and you gain 1 life.

Vicious Rumors deals 1 damage to each opponent. Each opponent discards a card, then mills a card. You gain 1 life.

{1}{B}: Veiled Shade gets +1/+1 until end of turn.

{1}, Sacrifice another creature: Put a +1/+1 counter on Undercity Necrolisk. It gains menace until end of turn. Activate only as a sorcery. (It can...

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

Destroy all creatures with mana value 3 or less.

When Plaguecrafter enters the battlefield, each player sacrifices a creature or planeswalker. Each player who can't discards a card.

Enchant creature Enchanted creature can't block, and its activated abilities can't be activated.

Whenever you gain life, you may pay {2}. If you do, draw a card. {3}{W}: Create a 1/1 white Soldier creature token with lifelink.

Whenever a nontoken creature you control dies, Midnight Reaper deals 1 damage to you and you draw a card.