Damn

Destroy target creature. A creature destroyed this way can't be regenerated.
Overload {2}{W}{W} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Abrupt Decay

This spell can't be countered.
Destroy target nonland permanent with mana value 3 or less.

Grim Tutor

Search your library for a card, put that card into your hand, then shuffle. You lose 3 life.

Elvish Piper

{G}, {T}: You may put a creature card from your hand onto the battlefield.

Black Sun's Zenith

Put X -1/-1 counters on each creature. Shuffle Black Sun's Zenith into its owner's library.

Fatal Push

Destroy target creature if it has mana value 2 or less.
Revolt — Destroy that creature if it has mana value 4 or less instead if a permanent you controlled left the battlefield this turn.