- Apply ~50% damage reduction to self only, during full channel duration of Emperor's Light in and out of Barrier.
- Emperor's Light out of Barrier has very short distance, so it can mostly disable only melee troops around him, but during channel he is stationary and target with low hp, so can be easily focused down with ranged troops. Would be good idea for enemy to be forced to kick his channel duration with disrupt ability to cancel self dmg reduction buff and EF's CC+buff to army.
P.S. Librarian needs some love, seriously...