Toxic Deluge

As an additional cost to cast this spell, pay X life.
All creatures get -X/-X until end of turn.

Thing in the Ice // Awoken Horror

Defender
Thing in the Ice enters the battlefield with four ice counters on it.
Whenever you cast an instant or sorcery spell, remove an ice counter from Thing in the Ice. Then if it has no ice counters on it, transform it.

Eerie Interlude

Exile any number of target creatures you control. Return those cards to the battlefield under their owner’s control at the beginning of the next end step.

Eerie Interlude

Exile any number of target creatures you control. Return those cards to the battlefield under their owner’s control at the beginning of the next end step.

Eerie Interlude

Exile any number of target creatures you control. Return those cards to the battlefield under their owner’s control at the beginning of the next end step.

Gryff’s Boon

Enchant creature
Enchanted creature gets +1/+0 and has flying.
: Return Gryff’s Boon from your graveyard to the battlefield attached to target creature. Activate this ability only any time you could cast a sorcery.

Survive the Night

Target creature gets +1/+0 and gains indestructible until end of turn. (Damage and effects that say “destroy” don’t destroy it.)
Investigate. (Create a colorless Clue artifact token with “, Sacrifice this artifact: Draw a card.”)

Cathar’s Companion

Whenever you cast a noncreature spell, Cathar’s Companion gains indestructible until end of turn. (Damage and effects that say “destroy” don’t destroy it.)

Gloomwidow

Reach
Gloomwidow can block only creatures with flying.

Howlpack Wolf

Howlpack Wolf can’t block unless you control another Wolf or Werewolf.

Thing in the Ice // Awoken Horror

Defender
Thing in the Ice enters the battlefield with four ice counters on it.
Whenever you cast an instant or sorcery spell, remove an ice counter from Thing in the Ice. Then if it has no ice counters on it, transform it.

Eerie Interlude

Exile any number of target creatures you control. Return those cards to the battlefield under their owner’s control at the beginning of the next end step.

Champion of the Parish

Whenever another Human enters the battlefield under your control, put a +1/+1 counter on Champion of the Parish.

Dread Return

Return target creature card from your graveyard to the battlefield.
Flashback—Sacrifice three creatures. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Thought-Knot Seer

( represents colorless mana.)
When Thought-Knot Seer enters the battlefield, target opponent reveals their hand. You choose a nonland card from it and exile that card.
When Thought-Knot Seer leaves the battlefield, target opponent draws a card.

Thought-Knot Seer

( represents colorless mana.)
When Thought-Knot Seer enters the battlefield, target opponent reveals their hand. You choose a nonland card from it and exile that card.
When Thought-Knot Seer leaves the battlefield, target opponent draws a card.

Elemental Uprising

Target land you control becomes a 4/4 Elemental creature with haste until end of turn. It’s still a land. It must be blocked this turn if able.

Havoc Sower

Devoid (This card has no color.)
: Havoc Sower gets +2/+1 until end of turn. ( represents colorless mana.)

Devour in Flames

As an additional cost to cast this spell, return a land you control to its owner’s hand.
Devour in Flames deals 5 damage to target creature or planeswalker.

Immobilizer Eldrazi

Devoid (This card has no color.)
: Each creature with toughness greater than its power can’t block this turn. ( represents colorless mana.)

Flaying Tendrils

Devoid (This card has no color.)
All creatures get -2/-2 until end of turn. If a creature would die this turn, exile it instead.

Archon of the Triumvirate

Flying
Whenever Archon of the Triumvirate attacks, detain up to two target nonland permanents your opponents control. (Until your next turn, those permanents can’t attack or block and their activated abilities can’t be activated.)