The List

Breath of Darigaaz

Kicker {2} (You may pay an additional {2} as you cast this spell.)
Breath of Darigaaz deals 1 damage to each creature without flying and each player. If this spell was kicked, it deals 4 damage to each creature without flying and each player instead.

Commander Anthology Volume II

Commander 2015

Kicker {2} (You may pay an additional {2} as you cast this spell.)Breath of Darigaaz deals 1 damage to each creature without flying and each player. If Breath of Darigaaz was kicked, it deals 4 damage to each creature without flying and each player instead.

Commander 2011

Kicker {2} (You may pay an additional {2} as you cast this spell.)
Breath of Darigaaz deals 1 damage to each creature without flying and each player. If Breath of Darigaaz was kicked, it deals 4 damage to each creature without flying and each player instead.

Duel Decks: Knights vs. Dragons

Archenemy

Invasion

Kicker o2 (You may pay an additional o2 as you play this spell.)
Breath of Darigaaz deals 1 damage to each creature without flying and each player. If you paid the kicker cost, Breath of Darigaaz deals 4 damage to each creature without flying and each player instead.