This adds indicators to the unit frames when an arena opponent, player's target or focus is targeting/casting on someone in the group. Untargeted mobs casting on someone in the group can be displayed as well.
You can adjust the positioning on your unit frames from the Group Tab with the X Offset, Y Offset, and Group Scale options.
Spells can be prevented from displaying if they are added to a blacklist in the Custom Options Tab.
Casts derived from nameplates are on by default but can be disabled in the custom options. Casts from arena opponents, focus and target will still be displayed.
The incoming cast Spell Name or Spell ID can be used to perform additional actions in the Conditions Tab. There are 8 currently set. All use pink border on unit frame along with an error beep sound.
TBC
1. Arcane Missiles for High Astromancer Solarian in TK.
2. L5 Arcane Charge for Promenade Sentinel in BT(see video).
3. Conflagration for Eredar Twins in SWP
WOTLK (10 and 25 man)
4. Flame Breath for Sartharion in Obsidian Sanctum
5. Fusion Punch for The Iron Assembly in Ulduar
6. Sunbeam for Freya in Ulduar *
7. Shock Blast for Mimron in Ulduar
8. Surge of Darkness for General Vezax in Ulduar
* Sunbeam can target things that you might not be tracking on your unit frames like a moonkin treant or a shaman totem