Lightning Helix

[FranAvalon]

If you target a creature which is removed from play before the spell resolves you should not gain life I think but you do.

This is a problem with every targeted spell that uses GetResolutionModifier().

Targeted spells with more complex "[do something to] target [object], then..." abilities use OnResolutionCompleted and have a bResult check (I think triadasoul figured out how to do that) to make sure the spell actually resolved, but GetResolutionModifier() events happen no matter what.