Worldfire in hand. Kroxa is your commander and in the command zone. {B}{R}{R}{R}{R} available.
Worldgorger Dragon in graveyard. Animate Dead in hand. Kroxa on the battlefield. available.
Worldgorger Dragon in graveyard. Kroxa on the battlefield. Dance of the Dead in hand. available.
Broodmoth on the battlefield. Solemnity on the battlefield. Kroxa in hand. available.
Worldgorger Dragon in the graveyard. Necromancy in hand. Kroxa, Titan of Death's Hunger on the battlefield. available.