Symbiotic

Symbiotic
by Cixi@Remulos (Classic Oceanic) 
  

WHAT THE ADDON IS FOR:
When targeting or hovering over a player, the Symbiotic addon will update the tooltip with the abilities that the Druid Symbiosis spell will grant the player and the target.
The abilities depend on the casting druid's spec, and the receiving player's class and spec, which makes it a large list of abilities to remember. The tooltip will help with that ;)

Note that the automatic Spec detection only works in close range (inspect distance). 
If you are too far (or if the player doesn't have a defined spec yet) you'll see a message telling you to get closer