Boxing Day

(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.) When I...

Choose one — • Counter target spell. • Manifest dread. (Look at the top two cards of your library. Put one onto the battlefield face down as a 2/2 ...

When Tunnel Surveyor enters, create a 1/1 white Glimmer enchantment creature token.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after IV.) I, II, III — Mill two cards. If two cards that share a card...

Choose one — • Into the Fire deals 2 damage to each creature, planeswalker, and battle. • Put any number of cards from your hand on the bottom of y...

Enchant creature When Stay Hidden, Stay Silent enters, tap enchanted creature. Enchanted creature doesn't untap during its controller's untap step....

Defender Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, Stalked Researcher can attack this turn as though...

Haste {3}{W/P}: Transform Harried Artisan. Activate only as a sorcery. ({W/P} can be paid with either {W} or 2 life.)

Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, target player mills two cards. (They put the top two cards...

Flying Piranha Fly enters tapped.

Backup 1 (When this creature enters the battlefield, put a +1/+1 counter on target creature. If that's another creature, it gains the following abi...

Whenever you manifest dread, put a card you put into your graveyard this way into your hand.

(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.) When you u...

Choose three. You may choose the same mode more than once. • Search your library for a Cave card, put it onto the battlefield tapped, then shuffle....

When Marina Vendrell's Grimoire enters, if you cast it, draw five cards. You have no maximum hand size and don't lose the game for having 0 or less...

Gain control of target creature until end of turn. Untap that creature. Until end of turn, it gains haste and "Whenever this creature deals combat ...

When Magmatic Galleon enters the battlefield, it deals 5 damage to target creature an opponent controls. Whenever one or more creatures your oppone...

Draw two cards. Create a 1/1 white Glimmer enchantment creature token.

Haste Mountaincycling {2} ({2}, Discard this card: Search your library for a Mountain card, reveal it, put it into your hand, then shuffle.)

Flying Whenever Ghostly Keybearer deals combat damage to a player, unlock a locked door of up to one target Room you control.

Backup 1 (When this creature enters the battlefield, put a +1/+1 counter on target creature. If that's another creature, it gains the following abi...

As an additional cost to cast this spell, return a permanent you control to its owner's hand. Flying

Flying Whenever Fear of Falling attacks, target creature defending player controls gets -2/-0 and loses flying until your next turn.

{1}{R}: Furnace Gremlin gets +1/+0 until end of turn. When Furnace Gremlin dies, incubate X, where X is its power. (Create an Incubator token with ...