[Xietor]

Casting certain globals also breaks a nap as far as I am concerned:

Any global that hurts my income, troops, is akin to a direct attack on me, including but not limited to: Burden of Time, Wrath of Gods, UtterDark.

Any global that screams "I have won the game, try and stop me", like Arcane Nexus or the Forge I consider a termination of the nap. Though personally I will give nap notice with the forge, but i do not blame any player that does not.

Basically there are certain globals that when you cast them, you should be ready to take on the entire world.