CHAT MSG SPELL PERIODIC SELF BUFFS

"CHAT_MSG_SPELL_PERIODIC_SELF_BUFFS", arg1

Fired when a buff is cast on self. (Unknown if external buff triggers this).
 * arg1: full combat text

Example:
 * "You gain BuffName."

''Also called for each "tick" of recurring effects, such as "heal-over-time" spells. Example: You gain 10 health from Rejuvenation.''