Smog Smasher
{4}{R}Creature — Mutant Berserker
Menace Start your engines! Whenever one or more creatures you control deal combat damage to a player, conjure a duplicate of target nontoken creature into exile. Max speed — At the beginning of combat on your turn, put all cards exiled with this creature onto the battlefield. They gain haste. Sacrifice them at the beginning of the next end step.