Fixed spell of creature 11669 (Flame Imp) in Molten Core

Source: http://www.wowhead.com/npc=11669/flame-imp#abilities

Signed-off-by: Cala Haryon <calaftp@free.fr>
Added support for event in Blackrock Spire of Scarshield Infiltrator
morphing into Vaelan

Source: http://www.youtube.com/watch?v=VVxOPiDVwNQ