Cataclysmic Total Extinction Death Blast

This is the mightiest spell a creature can cast, By simply speaking aloud, you can alter the very foundations of reality in accord with your desires.

It has the power to destroy not just any creature you target, but the entire dimension from which this spell was cast, leaving the user in an empty void.

The almighty Marco has been tasked with ensuring the incantation to this spell is never uttered.

When casting roll 1d1000, if the roll is less than the caster's level the spell activates, else Marco teleports to the caster's location and interupts the spell, expending the spell slot, but producing no other effect