702.84b If a creature has multiple instances of annihilator, each triggers separately.
This is missing from Exalted:
702.81a Exalted is a triggered ability. “Exalted” means “Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.”
702.81b A creature “attacks alone” if it’s the only creature declared as an attacker in a given combat phase. See rule 506.5.
I know its only a reminder rule and doesn't change how the ability works, but it seems like it should have it since most others do.
702.81c If a permanent has multiple instances of Exalted, each triggers separately.