Somehow An-Windr stole Gulli’s yellow sword special and hit me with it. Subsequently, whether this is intended or not, I had Gulli’s special active a few turns later, and when I fired Gazelles (assuming it would clean it), it instead activated the yellow sword to hit An-Windr.
For what it’s worth, this is the first time I’m extensively testing Gulli/Wilbur now that they’re emblemed. With these two at +20 it’s flat out silly.
Keep in mind that the special specifies the following: When the effect ends, the owner deals damage to all enemies – each hit taken during the turn duration increases the damage dealt to all enemies
That means when you used Guardian Gazelle to remove the status from Gullinbursti, it ended the effect and damage was dealt to An-Windr.