Petro Disruption (Japanese: ペトロディスラプション Petoro Disurapushon) is a poison-elemental Great Magic spell, featured in Valkyrie Profile. It can be cast by any Sorcerer during a Purify Weird Soul sequence, provided their default attack spell is Poison Blow and their weapon allows Great Magic. As all Great Magic spells, it is multi-target. Petro Disruption deals several hits and adds a good deal of energy to the Gauge. It is thus best used second in a PWS sequence, to help maximize the damage of later PWS attacks.