Boxing Day

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.)

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...

Whenever you roll one or more dice, create a 1/1 blue Faerie Dragon creature token with flying.

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

Flying When Djinni Windseer enters the battlefield, roll a d20. 1—9 | Scry 1. 10—19 | Scry 2. 20 | Scry 3.

When Displacer Beast enters the battlefield, venture into the dungeon. (Enter the first room or advance to the next room.) Displacement — {3}{U}: R...

When Priest of Ancient Lore enters the battlefield, you gain 1 life and draw a card.

{T}, Sacrifice Mimic: Add one mana of any color. {2}: Mimic becomes a Shapeshifter artifact creature with base power and toughness 3/3 until end of...

Vigilance Iron Golem attacks or blocks each combat if able.

Roll a d20. 1—9 | Draw two cards. 10—19 | Scry 2, then draw two cards. 20 | Scry 3, then draw three cards.

Bewitching Whispers — When Shessra, Death's Whisper enters the battlefield, target creature blocks this turn if able. Whispers of the Grave — At th...

Whenever Krydle of Baldur's Gate deals combat damage to a player, that player loses 1 life and mills a card, then you gain 1 life and scry 1. Whene...

Mage Hand — {T}: Untap target permanent not named Clever Conjurer. Activate only as a sorcery.

Room abilities of dungeons you own trigger an additional time.

When Potion of Healing enters the battlefield, draw a card. {W}, {T}, Sacrifice Potion of Healing: You gain 3 life.

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.

Dark One's Own Luck — Whenever you roll one or more dice, Farideh, Devil's Chosen gains flying and menace until end of turn. If any of those result...

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

This spell costs {2} less to cast if a creature died this turn. Ward {2} (Whenever this creature becomes the target of a spell or ability an oppone...

Trample Keen Senses — When Owlbear enters the battlefield, draw a card.

{2}, Sacrifice Neverwinter Dryad: Search your library for a basic Forest card, put it onto the battlefield tapped, then shuffle.

Search the Room — {5}{U}: Roll a d20. 1—9 | Draw a card. 10—20 | Look at the top three cards of your library. Put one of them into your hand and th...