Choose a creature type. Target creature gets -1/-1 until end of turn for each permanent of the chosen type you control.

Target creature gets +1/+0 until end of turn for each artifact you control.

Choose target creature. Mill four cards, then that creature gets -1/-1 until end of turn for each land card in your graveyard.

Choose one —

• Target creature gets +2/+2 until end of turn.

• Target creature gets -1/-1 until end of turn.

• You gain 2 life.

You gain 1 life. Target creature gets -X/-X until end of turn, where X is the amount of life you gained this turn.

Target creature gets -1/-1 until end of turn for each Swamp you control.

Choose one or both —

• Target creature gets -1/-1 until end of turn.

• Put a +1/+1 counter on target creature.

Choose one or both —

• Target creature gets -1/-1 until end of turn.

• Put a +1/+1 counter on target creature.

Target creature gets -2/-2 until end of turn. It gets an additional -1/-1 until end of turn for each Desert you control.

Target creature gets +4/+0 until end of turn.

All creatures gain fear until end of turn. (They can't be blocked except by artifact creatures and/or black creatures.)

Cycling (, Discard this card: Draw a card.)

When you cycle this card, you may have target creature gain fear until end of turn.

Target creature gets -4/-4 until end of turn. Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Target creature gets +1/+1 until end of turn. Another target creature gets -1/-1 until end of turn.

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

Target creature gets -3/-3 until end of turn. You may tap any number of untapped Vampire creatures you control. If you do, put a +1/+1 counter on each of those Vampires.

Target creature gets -2/-2 until end of turn.

Flashback—, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Target creature gets -2/-2 until end of turn. It gets an additional -1/-1 until end of turn for each modified creature you controlled as you cast this spell. (Equipment, Auras you control, and counters are modifications.)

Target creature gets -2/-2 until end of turn. You gain 2 life.