Quote Originally Posted by Unregistered View Post
What exactly triggers Chtugha's triggered ability? The wiki says Ability (Raging + 5 bursts. 1 time), I was thinking it would trigger when I full burst during her rage phase, but my friend got hit by it upon enter rage for the first time.
Your friend most likely full bursted her to rage. Since she enters rage phase in player's turn (and not her own), the conditions are still met.