Haste Whenever Goblin Guide attacks, defending player reveals the top card of their library. If it's a land card, that player puts it into their hand.

Trample, haste Whenever Lightning Skelemental deals combat damage to a player, that player discards two cards. At the beginning of the end step, sacrifice Lightning Skelemental.

Lightning Bolt deals 3 damage to any target.

Blackcleave Cliffs enters the battlefield tapped unless you control two or fewer other lands. {T}: Add {B} or {R}.

({T}: Add {B} or {R}.) As Blood Crypt enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Dragonskull Summit enters the battlefield tapped unless you control a Swamp or a Mountain. {T}: Add {B} or {R}.

({T}: Add {R}.)

Target opponent loses 3 life. Flashback {5}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Lava Spike deals 3 damage to target player or planeswalker.

Spectacle {R} (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.) Exile the top two cards of your library. Until the end of your next turn, you may play those cards.

Spectacle {R} (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.) Skewer the Critics deals 3 damage to any target.

Target player loses 3 life and you gain 3 life.

Destroy target artifact or enchantment. Destructive Revelry deals 2 damage to that permanent's controller.

Destroy target creature or enchantment an opponent controls. You lose life equal to that permanent's mana value.

When Kroxa enters the battlefield, sacrifice it unless it escaped. Whenever Kroxa enters the battlefield or attacks, each opponent discards a card, then each opponent who didn't discard a nonland card this way loses 3 life. Escape—{B}{B}{R}{R}, Exile five other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)

Searing Blood deals 2 damage to target creature. When that creature dies this turn, Searing Blood deals 3 damage to the creature's controller.

Destroy target artifact. Smash to Smithereens deals 3 damage to that artifact's controller.

Return target creature card with mana value 3 or less from your graveyard to the battlefield. Cycling {2} ({2}, Discard this card: Draw a card.)

When you cast this spell, any player may pay 5 life. If a player does, counter Dash Hopes. Counter target spell.

When Hopeless Nightmare enters the battlefield, each opponent discards a card and loses 2 life. When Hopeless Nightmare is put into a graveyard from the battlefield, scry 2. {2}{B}: Sacrifice Hopeless Nightmare.

Haste Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

If an opponent gained life this turn, you may pay {B} rather than pay this spell's mana cost. Target player loses 5 life and you gain 5 life.