Boxing Day

Indestructible Battalion — Whenever Tajic, Blade of the Legion and at least two other creatures attack, Tajic gets +5/+5 until end of turn.

Haste

At the beginning of your upkeep, return a creature you control to its owner's hand.

When Sin Collector enters the battlefield, target opponent reveals their hand. You choose an instant or sorcery card from it and exile that card.

Until end of turn, creatures you control gain "When this creature dies, it deals 2 damage to target creature an opponent controls."

When Scab-Clan Giant enters the battlefield, it fights target creature an opponent controls chosen at random.

Battalion — Whenever Boros Mastiff and at least two other creatures attack, Boros Mastiff gains lifelink until end of turn. (Damage dealt by a crea...

{T}: Add {U} or {R}. {U}{R}, {T}, Sacrifice Izzet Cluestone: Draw a card.

{T}: Add {R} or {G}. {R}{G}, {T}, Sacrifice Gruul Cluestone: Draw a card.

{T}: Add {U} or {B}. {U}{B}, {T}, Sacrifice Dimir Cluestone: Draw a card.

You may tap or untap target permanent, then you may tap or untap another target permanent. Cipher (Then you may exile this spell card encoded on a ...

Whenever a player taps a land for mana, that player adds one mana of any type that land produced.

Forestwalk (This creature can't be blocked as long as defending player controls a Forest.) Protection from green

Target creature gets +X/-X until end of turn, where X is the number of cards in your hand.

{G}{U}, {T}: Double the number of each kind of counter on target artifact, creature, or land.

Lifelink (Damage dealt by this creature also causes you to gain that much life.) Extort (Whenever you cast a spell, you may pay {W/B}. If you do, e...

Vigilance, reach Ruric Thar, the Unbowed attacks each combat if able. Whenever a player casts a noncreature spell, Ruric Thar deals 6 damage to tha...

Rot Farm Skeleton can't block. {2}{B}{G}, Mill four cards: Return Rot Farm Skeleton from your graveyard to the battlefield. Activate only as a sor...

Return each creature that dealt damage this turn to its owner's hand.

Counter target spell. Its controller can't cast spells this turn.

Target opponent reveals their hand. You choose up to X nonland cards from it and exile them. For each card exiled this way, search that player's gr...

Destroy target artifact or creature. It can't be regenerated.

You may have Progenitor Mimic enter the battlefield as a copy of any creature on the battlefield, except it has "At the beginning of your upkeep, i...

Counter target spell. At the beginning of your next precombat main phase, add X mana in any combination of colors, where X is that spell's mana value.