Destroy target creature. If that creature entered this turn, scry 2.

At the beginning of your end step, target player discards a card or sacrifices a nonland, nontoken permanent. If that card or permanent shares a card type with a card integrated onto Tithe to the Machine, they lose 3 life. Then integrate that card.

As an additional cost to cast this spell, sacrifice a creature.
Return to the battlefield target creature card from your graveyard with mana value less than or equal to 2 plus the sacrificed creature's mana value.

This spell costs {3}{B} less to cast if a creature died this turn.
Destroy target creature.

Search your library for a card, put it into your hand, then shuffle.
Flashback—{1}{B}, Discard a card, Sacrifice a creature.

Target player sacrifices a creature or planeswalker. You may put a deathtouch counter on up to one target creature you control, then that player loses 1 life for each creature you control with deathtouch.

As an additional cost to cast this spell, sacrifice a creature or Food.
Destroy target creature or planeswalker.

Target player discards two cards and loses 2 life. If this spell's flashback cost was paid, instead that player discards a card and loses 1 life.
Flashback {B}

A God Divided deals 2 damage to each nonenchantment creature.
Creatures you control get +1/+0 until end of turn.
III — You may sacrifice a creature. If you do, A God Divided deals damage to any target equal to the sacrificed creature's power.

Enchant creature
Enchanted creature gets +2/+0 and has “Attacking creatures you control get +1/+0.”
Wander {2}{R}

Create a tapped 2/1 red Human Warrior creature token.
Flashback {2}{R}

Favored
Whenever a legendary creature you control attacks, create a tapped and attacking token that's a copy of that creature, except it's not legendary and is an enchantment in addition to its other types.

Target creature you control gets +2/+0 and gains first strike until end of turn. If it's attacking, create a 1/1 white Human creature token that's tapped and attacking.

Enchant creature
Enchanted creature has double strike.

Once each turn, when you play a card from anywhere but your hand, you may create a tapped Treasure token.
{2}{R}: Level 2
At the beginning of your upkeep, exile the top card of your library. You may play that card this turn.
{3}{R}: Level 3
Whenever another permanent you control leaves the battlefield, this Class deals 1 damage to any target.

Braise deals 5 damage to target creature or planeswalker. When it dies this turn, its controller creates a Food token.

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. Creatures you control with menace get +1/+0 until end of turn.

Target attacking creature gets +3/+3 until end of turn. Put a trample counter on that creature.

You may cast this spell by paying {1}{R}{R} and exiling X cards with flashback from your graveyard rather than paying its mana cost.
Bring Down the Sky deals X damage to each creature and each planeswalker.

Burn Rubber deals 1 damage to each creature your opponents control. Creatures your opponents control can't block this turn.

Calamitous War Cry deals 2 damage to each creature. If there are six or more different creature types among creatures you control as you cast this spell, it deals 2 damage to each creature you don't control instead.

Whenever a creature you control dies during your turn, you may exile the top card of your library. You may play that card until you exile another card with Campaign of Retribution.

Choose one. If this spell's flashback cost was paid, instead choose three and you may choose the same mode more than once.
• Destroy target artifact.
• This spell deals 3 damage to any target.
• You may discard one or more cards. If you do, draw that many cards plus one.
Flashback {7}{R}{R}

Target creature gets +X/+0 until end of turn.
Draw a card.

Gain control of up to two target creatures with total mana value 4 or less until end of turn. Untap one of them. It gains haste until end of turn.