Commander of Chemical Warfare

Gas mask, First strike, Defender, {t} deal 7 damage to target creature.
(Commander of Chemical Warfare can't be the target of instants)
When Commander of Chemical warfare enters the battlefield create {x} 3/3 soldier creature tokens with haste, Gas Mask and {t} deal 3
damage to target creature. During your upkeep create {x} 3/3 soldier creature tokens with haste, Gas Mask and {t} deal 3 damage to target creature.