Event:SKILL UPDATE COOLDOWN

Occurs when the player casts a spell.

Arguments: arg1 - Usually contains the message of what happened (for example: " casts on ", on some spells: "You cast ", some spells do not give any message at all (like Wave Armor).

Use the arg1 to pick up instant spell casts by parsing it with "You" / and, perhaps even that you want to trigger something in your addon.