For each player, choose a creature card in that player's graveyard. Put those cards onto the battlefield under your control. They're black Zombies in addition to their other colors and types and they gain decayed. (A creature with decayed can't block. When it attacks, sacrifice it at end of combat.)
Format Legality
Standard Not_legal
Pioneer Not_legal
Modern Not_legal
Legacy Legal
Vintage Legal
Commander Legal
Pauper Not_legal