Time Spiral

When you cast a creature spell, sacrifice Skittering Monstrosity.

Shadow (This creature can block or be blocked by only creatures with shadow.) When Faceless Devourer enters the battlefield, exile another target c...

Flash (You may cast this spell any time you could cast an instant.) Enchant creature Enchanted creature gets -2/-1.

Flying Shadow (This creature can block or be blocked by only creatures with shadow.) {B}{B}: Creatures with shadow get +1/+0 until end of turn and ...

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.) When Skulking Knight beco...

{0}: Viscid Lemures gets -1/-0 and gains swampwalk until end of turn. (It can't be blocked as long as defending player controls a Swamp.)

Target player reveals their hand and the top card of their library. You choose a card revealed this way. That player puts the chosen card on the bo...

Destroy target nonblack creature that entered the battlefield since your last turn ended.

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Target creature g...

First strike When Nightshade Assassin enters the battlefield, you may reveal X black cards in your hand. If you do, target creature gets -X/-X unti...

Tendrils of Corruption deals X damage to target creature and you gain X life, where X is the number of Swamps you control.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.) Suspend 5—{B} (Rather than cast this card from your hand...

Target creature gets +1/+0, becomes black, and gains shadow until end of turn. (It can block or be blocked by only creatures with shadow.) Flashbac...

Destroy target tapped creature.

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.) When Skulking Knight beco...

Whenever you cast a creature spell, create X 1/1 black Thrull creature tokens, where X is that spell's mana value. When you control seven or more ...

At the beginning of your upkeep, tap Sangrophage unless you pay 2 life.

Target player reveals their hand and the top card of their library. You choose a card revealed this way. That player puts the chosen card on the bo...

Destroy target nonblack creature. Madness {B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it...

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Until end of turn...

{T}, Sacrifice Magus of the Mirror: Exchange life totals with target opponent. Activate only during your upkeep.

All Slivers are colorless.

Whenever a creature an opponent controls dies, you may pay {1}{B}. If you do, return that card to the battlefield under your control. If it's a cre...

Return target creature card from your graveyard to the battlefield. Flashback—Sacrifice three creatures. (You may cast this card from your graveyar...