Spiritmaster Darkness spec lifedrain level 13 and 15 Stifle Lifeforce and Syphon Soul have the same delve/power cost (pretty much the same spell with a different name)
Both delve as:
2.5 cast
51 cold damage
8 power cost
Spiritmaster Lifedrain L13 & L15
Re: Spiritmaster Lifedrain L13 & L15
Level 15 should not have been there and has been removed.