Grimoire of the Dead

{1}, {T}, Discard a card: Put a study counter on Grimoire of the Dead.
{T}, Remove three study counters from Grimoire of the Dead and sacrifice it: Put all creature cards from all graveyards onto the battlefield under your control. They're black Zombies in addition to their other colors and types.

Elminster's Simulacrum

For each opponent, you create a token that's a copy of up to one target creature that player controls.

Hysterical Blindness

Creatures your opponents control get -4/-0 until end of turn.

Thassa's Ire

{3}{U}: You may tap or untap target creature.

Decanter of Endless Water

You have no maximum hand size.
{T}: Add one mana of any color.

Plague Mare

Plague Mare can't be blocked by white creatures.
When Plague Mare enters, creatures your opponents control get -1/-1 until end of turn.

Make Obsolete

Creatures your opponents control get -1/-1 until end of turn.

Truss, Chief Engineer

Whenever Truss, Chief Engineer enters or another creature dies, put a hack counter on Truss.
{2}, {T}, Remove X hack counters from Truss: Add or subtract X from a number or number word on target spell or permanent until end of turn. This effect can't reduce a number below 1 or a number word below one.

Ornithopter of Paradise

Phone a Friend

Call someone and ask them to choose one. If they don't answer, an opponent chooses one. (Don't explain anything else. You choose targets.)
• A — Gain control of target creature you don't control.
• B — Choose target creature you control. Create two tokens that are each copies of it.
• C — Take an extra turn after this one.
• D — Draw seven cards.

Reckless Spite

Destroy two target nonblack creatures. You lose 5 life.

Exchange of Words

When Exchange of Words enters, choose two target creatures. For as long as Exchange of Words remains on the battlefield, exchange the text boxes of those creatures.