Dakshai’s Body-Mind Union

Heroic Tier
Prerequisite: Githzerai, iron mind racial power
Benefit: When you are subjected to an effect that a save can end, you can expend the use of your iron mind as an immediate interrupt to make a saving throw with a +5 bonus against that effect, instead of gaining the normal effect of iron mind.

Published in Player's Handbook 3, page(s) 180.