Carl's fallback plan: berserk the mantaurs with heavy metal and strip the Basilica Guards' Untouchable status with Black Nimbus.
The original Khepri temple plan had Carl forcing the Mantaur Guards into berserk rage so they would fight the rams and anyone else in the way while the crew stormed the temple, then triggering Li Na's Profane Iron chain skill inside to slaughter the nagas under cover of chaos. Neither piece was needed: Li Na's aura worked too well, and Carl decided to blow himself up instead.
During the escape, both halves get used at once. Carl confirms over Battle Chat that Prepotente has already negated his Black Nimbus with a potion, then calls Operation Head Banger: he hurls a Potion of Inflict Black Nimbus at Brother Widespread Tempest and rolls two Alarm Trap Balls in opposite directions blaring Megadeth's "Holy Wars... The Punishment Due," stripping the ogre's Untouchable status and berserking every mantaur in earshot. A Mantaur Mosh Pit warning follows, the marked-for-death gods descend on the ogre, and Carl finishes the survivors with Profane Iron.
The improvised escape plan that clears the guild corridor of ogres and mantaurs.