Desolation Giant

Kicker {W}{W} (You may pay an additional {W}{W} as you cast this spell.)
When Desolation Giant enters, destroy all other creatures you control. If it was kicked, destroy all other creatures instead.

Commander Anthology Volume II

Kicker {W}{W} (You may pay an additional {W}{W} as you cast this spell.)
When Desolation Giant enters the battlefield, destroy all other creatures you control. If it was kicked, destroy all other creatures instead.

Commander 2015

Time Spiral Timeshifted

Kicker {W}{W} (You may pay an additional {W}{W} as you play this spell.)
When Desolation Giant comes into play, destroy all other creatures you control. If the kicker cost was paid, destroy all other creatures instead.

Apocalypse

Kicker o
Wo
W (You may pay an additional o
Wo
W as you play this spell.)
When Desolation Giant comes into play, destroy all other creatures you control. If you paid the kicker cost, destroy all other creatures instead.