Greatest damage that can be done in one action

[Myou]

The greatest non-charge melee damage thread has me curious now.

What's the greatest damage that can be done in one action - full attack, pounce, whatever? Barring infinite and nigh infinite loops. :smalltongue:

[candycorn]

I believe the record for Hulking Hurler's throwing damage was in the trillions, for a full attack.

[Morph Bark]

Well, I once got a legally-built critter that dealt more damage in d6s than there are particles in the universe, so there's that.

Any limits you want to impose?

[Heliomance]

Is prep time allowed? Because if so, it's Lord of Procrastination's World Record Damage: Multiple Dirty Tricks for Insane Synergy, hands down.