Boxing Day

Whenever Avalanche Tusker attacks, target creature defending player controls blocks it this combat if able.

{2}: Mirage Mirror becomes a copy of target artifact, creature, enchantment, or land until end of turn.

Whenever Permeating Mass deals combat damage to a creature, that creature becomes a copy of Permeating Mass.

Choose one or both — • Deafening Clarion deals 3 damage to each creature. • Creatures you control gain lifelink until end of turn.

When Foundry Champion enters the battlefield, it deals damage to any target equal to the number of creatures you control. {R}: Foundry Champion get...

Flying Whenever a Dragon you control becomes the target of a spell or ability an opponent controls, Thunderbreak Regent deals 3 damage to that player.

Whenever an opponent casts a noncreature spell, Cindervines deals 1 damage to that player. {1}, Sacrifice Cindervines: Destroy target artifact or ...

Vigilance When Lumbering Battlement enters the battlefield, exile any number of other nontoken creatures you control until it leaves the battlefiel...

Flying Whenever another Spirit enters the battlefield under your control, you gain 2 life. {3}{W}: Create a 1/1 white Spirit creature token with fl...

Trample, haste Alliance — Whenever another creature enters the battlefield under your control, double Devilish Valet's power until end of turn.

{T}, Sacrifice Emrakul's Evangel and any number of other non-Eldrazi creatures: Create a 3/2 colorless Eldrazi Horror creature token for each creat...

Flying Sacrifice Hope of Ghirapur: Until your next turn, target player who was dealt combat damage by Hope of Ghirapur this turn can't cast noncre...

Whenever a face-down creature enters the battlefield under your control, you may search your library for a basic land card, reveal it, put it into ...

Scry 3.

Whenever Two-Headed Giant attacks, flip two coins. If both coins come up heads, Two-Headed Giant gains double strike until end of turn. If both coi...

First strike, haste Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can't block as long as it has a +1/+1...

When Bristling Hydra enters the battlefield, you get {E}{E}{E} (three energy counters). Pay {E}{E}{E}: Put a +1/+1 counter on Bristling Hydra. It g...

Manifest the top card of your library, then put X +1/+1 counters on it. (To manifest a card, put it onto the battlefield face down as a 2/2 creatur...

Other Goblin creatures you control attack each combat if able. At the beginning of combat on your turn, create a 1/1 red Goblin creature token with...

{T}: Add {G}, {U}, or {R}. Morph {2} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) Whe...

Flying Whenever Archon of the Triumvirate attacks, detain up to two target nonland permanents your opponents control. (Until your next turn, those...

When Temur War Shaman enters the battlefield, manifest the top card of your library. (Put that card onto the battlefield face down as a 2/2 creatur...

Menace (This creature can't be blocked except by two or more creatures.) Megamorph {R} (You may cast this card face down as a 2/2 creature for {3}...

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.) If another red source you control would deal d...