Counter target spell. Choose 1, 2, or 3 at random. Its controller mills that many cards, then exiles cards from the top of their library until they exile a nonland card with a different name than that spell. They may cast that card without paying its mana cost. Then they put the exiled cards on the bottom of their library in a random order.

Your opponents can't gain life. −2: Create a 1/1 red Devil creature token with "When this token dies, it deals 1 damage to any target."

This spell costs {1} less to cast for each instant and sorcery card in your graveyard. Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) When this creature enters, discard your hand, then draw three cards.

This creature doesn't untap during your untap step. {1}, Sacrifice another creature: Untap this creature. Activate only during your turn.

At the beginning of your upkeep, return an instant or sorcery card at random from your graveyard to your hand. Whenever you cast an instant or sorcery spell, this creature gets +4/+0 until end of turn.

When this creature enters, it deals 1 damage to each opponent. Delirium — At the beginning of each opponent's upkeep, if there are four or more card types among cards in your graveyard, this creature deals 1 damage to that player.

Haste Whenever a creature you control attacks, this creature deals 1 damage to the player or planeswalker it's attacking.

Trample, haste When this creature attacks, up to one target creature defending player controls blocks it this combat if able. At the beginning of the end step, sacrifice this creature.

Menace At the beginning of your upkeep, reveal the top card of your library. Any opponent may have you put that card into your graveyard. If a player does, this creature deals damage to that player equal to that card's mana value. Otherwise, put that card into your hand.

During your turn, this creature has first strike. Whenever another creature dies, this creature deals 1 damage to target player or planeswalker.

When this creature dies, it deals 1 damage to any target. {1}{R}: This creature gets +2/+0 until end of turn.

Haste Morbid — {T}: This creature deals 1 damage to any target. Activate only if a creature died this turn.

Shuffle your library. As many times as you choose, you may exile the top card of your library. If the total mana value of the cards exiled this way is 13 or less, you may cast any number of spells from among those cards without paying their mana costs.

Devil's Play deals X damage to any target. Flashback {X}{R}{R}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Create four 1/1 red Devil creature tokens. They have "When this token dies, it deals 1 damage to any target."

Draw two cards, then discard two cards. Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Make Mischief deals 1 damage to any target. Create a 1/1 red Devil creature token. It has "When this token dies, it deals 1 damage to any target."

Gain control of target creature until end of turn. Untap that creature. It gets +2/+0 and gains haste until end of turn. Madness {3}{R} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Mizzium Mortars deals 4 damage to target creature you don't control. Overload {3}{R}{R}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Each player discards their hand, then draws seven cards. Miracle {1}{R} (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)

Return up to one target instant card and up to one target sorcery card from your graveyard to your hand, then discard a card. Exile Shreds of Sanity.

As an additional cost to cast this spell, discard a card. Draw two cards.

Destroy target artifact you don't control. Overload {4}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

When this enchantment enters, you become the monarch. At the beginning of your upkeep, this enchantment deals 2 damage to any target. If you're the monarch, it deals 7 damage instead.

Brimstone Volley deals 3 damage to any target. Morbid — Brimstone Volley deals 5 damage instead if a creature died this turn.

Create two 1/1 red Devil creature tokens. They have "When this token dies, it deals 1 damage to any target."

Fiery Temper deals 3 damage to any target. Madness {R} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

As an additional cost to cast this spell, sacrifice a creature or planeswalker. Heartfire deals 4 damage to any target.

Magma Spray deals 2 damage to target creature. If that creature would die this turn, exile it instead.

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

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Stoke the Flames deals 4 damage to any target.

{T}: Add {C}. {3}: Return this card from your graveyard to the battlefield tapped.