Destroy target artifact or enchantment with mana value X. It can't be regenerated. You gain X life.

At the beginning of each player's upkeep, that player sacrifices an artifact of their choice.

When you unlock this door, search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

(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.)

Enchant creature

Enchanted creature gets +3/+3.

Dredge 2 (If you would draw a card, you may mill two cards instead. If you do, return this card from your graveyard to your hand.)

Whenever a player casts a black spell, you may pay . If you do, target player loses 1 life.

Smoldering Crater enters tapped.

: Add .

Cycling (, Discard this card: Draw a card.)

Defender

Whenever you cast an instant or sorcery spell, put a number of ember counters on Smoldering Egg equal to the amount of mana spent to cast that spell. Then if Smoldering Egg has seven or more ember counters on it, remove them and transform Smoldering Egg.

Smoldering Spires enters tapped.

When Smoldering Spires enters, target creature can't block this turn.

: Add .

At the beginning of your upkeep, target player loses 1 life.

Sacrifice Smoldering Tar: It deals 4 damage to target creature. Activate only as a sorcery.

When you unlock this door, manifest dread, then put three +1/+1 counters on that creature.

(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.)