Holyform

Holyform is a spell used by Sunblade Dawn Priests in the Sunwell Plateau. It seems to function as a healing version of Shadowform and has received some attention by players who would like it to be a spell for the priest class as well. Apparently the idea of a "Holyform" has been suggested prior to the NPC spell's implementation, and some players speculated (upon discovering Holyform through datamining before it was implemented as a NPC spell in 2.4.0) on whether Holyform would be a new priest spell in WOTLK. It seems however that Blizzard thought giving priests more than one form would make them too similar to druids, although they later gave priests Chakra which some players consider similar to Holyform.

Graphics
Holyform causes the caster to become somewhat translucent with sparkles fluttering around him/her, in addition to a yellow flame-like effect similar to that from Power Infusion.