Instead of Spellbreaker removing boons outright,
-Work in a stacking debuff (max 10) that reduces boon effectiveness (10%) as a core mechanic.
*Static on/off boons only negated at 100% (stability, resistance)
-Add in a trait that causes your attacks to carve off 1sec boon duration from foes dealing X-damage per boon affected. 1sec CD unique per foe.
-Trait that causes debuff to increase damage target takes from all sources.
-A dagger attack that removed all debuff stacks but does X-effect.
-A trait that improves debuff and related traits by 100% but reduces max stack count by 30%.
-Trait that gives you %chance to evade attacks, from foe with debuff, per stack.
Idk this kind of stuff, just thinking less conflict with necromancer corrupts.