Overrun affects only creatures you control at the time it resolves. It won’t affect creatures that come under your control later in the turn.
Legalitet:
Standard: Ej legal
Pioneer: Ej legal
Modern: Legal
Legacy: Legal
Vintage: Legal
EDH / Commander: Legal
Pauper: Ej legal
Explorer: Ej legal
Historic: Ej legal
Brawl: Ej legal
Premodern: Legal
93/94: Ej legal
Overrun är Legal i dessa block: Rath Cycle, Odyssey