Stregoneria
Distruggi un permanente non terra bersaglio e tutti gli altri permanenti con lo stesso nome di quel permanente.
If the target permanent is an illegal target by the time Maelstrom Pulse tries to resolve, the spell won't resolve. You won't destroy any permanents at all. If the target is legal but not destroyed (most likely because it has indestructible), you do destroy other permanents with the same name.