Invisibility
Ranged spell
Daily
Target:
You or one nearby ally
Effect:
Until the end of the battle (or for five minutes out of combat), the target becomes invisible until it attacks or uses some ridiculously flashy action.
High Arcana: The duration out of combat is 1 hour instead.
7th Level Spell:
You can now target 1d3 nearby allies (including you) with the spell.
9th Level Spell:
Creatures made invisible by the spell have a 25% chance of remaining invisible the first time (and first time only) they attack or get flashy.