Boxing Day

Draw a card for each different mana value among nonland cards in your graveyard.

Choose target player. Return half the creatures they control to their owner's hand, rounded up.

Whenever Soulknife Spy deals combat damage to a player, draw a card.

Whenever Shortcut Seeker deals combat damage to a player, venture into the dungeon. (Enter the first room or advance to the next room.)

Target creature gets -2/-0 until end of turn. Draw a card.

Menace, reach

Ward {3} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {3}.)

Until end of turn, target creature becomes a Dragon with base power and toughness 4/4 and gains flying. (It loses all other creature types.)

Dominate Monster — When Mind Flayer enters the battlefield, gain control of target creature for as long as you control Mind Flayer.

Whenever Guild Thief deals combat damage to a player, put a +1/+1 counter on it. Cunning Action — {3}{U}: Guild Thief can't be blocked this turn.

Enchant creature Enchanted creature has flying and "Whenever this creature deals combat damage to a player, venture into the dungeon." (Enter the f...

Flying When Eccentric Apprentice enters the battlefield, venture into the dungeon. (Enter the first room or advance to the next room.) At the begin...

Flash Drag Below — When Dragon Turtle enters the battlefield, tap it and up to one target creature an opponent controls. They don't untap during th...

This spell costs {U} less to cast for each instant and sorcery spell you've cast this turn. Whenever Demilich attacks, exile up to one target insta...

Enchant creature When Charmed Sleep enters the battlefield, tap enchanted creature. Enchanted creature doesn't untap during its controller's untap ...

Whenever you gain life, put a +1/+1 counter on Celestial Unicorn.

Flying Lightning Breath — When Blue Dragon enters the battlefield, until your next turn, target creature an opponent controls gets -3/-0, up to one...

Counter target creature or planeswalker spell. Venture into the dungeon. (Enter the first room or advance to the next room.)

Flying Whirlwind — When Air-Cult Elemental enters the battlefield, return up to one other target creature to its owner's hand.

Choose one — • Make a Retreat — Return target creature you control to its owner's hand. • Stand and Fight — Target creature gets +1/+3 until end of...

Choose one — • Rouse the Party — Creatures you control get +1/+1 until end of turn. • Set Off Traps — This spell deals 5 damage to target attacking...

Flying Cold Breath — When White Dragon enters the battlefield, tap target creature an opponent controls. That creature doesn't untap during its con...

When Veteran Dungeoneer enters the battlefield, venture into the dungeon. (Enter the first room or advance to the next room.)

Each Skeleton you control has trample, attacks each combat if able, and gets +X/+0, where X is the number of other Skeletons you control. At the be...