Wall of Ice

Drudge Skeletons

{B}: Regenerate Drudge Skeletons. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Elvish Archers

Wrath of God

Destroy all creatures. They can't be regenerated.

Smoke

Players can't untap more than one creature during their untap steps.

Nightmare

Flying (This creature can't be blocked except by creatures with flying or reach.)
Nightmare's power and toughness are each equal to the number of Swamps you control.

Mana Flare

Whenever a player taps a land for mana, that player adds one mana of any type that land produced.

Sorceress Queen

{T}: Target creature other than Sorceress Queen has base power and toughness 0/2 until end of turn.