Yeah I don't think instant kill is good but if it was, for example, a permanent that while in play caused creatures to subdivide upon death I think that would be fine.
For example I play a firebolt on an armagio and kill it in one hit. It subdivides into 12 (or maybe 8) higgs bosons if the LHC is in play. Just an idea. I HATE instant kill trust me.
Or alternatively the LHC could be a weapon.
Weapon: Target creature loses 2 hp and a higgs boson is created on the opponent's field.
(ie chipping off a piece of a creature and turning it into some mass on the field) So it wouldn't be instant kill but it would chip off a piece of the creature and fill a creature slot with the resulting partition.
I like the idea, but I think that it is leaving away from gravity a bit. If this idea fails or I can make something satisfying, I might try to make a "death" particle with a mechanic like that. Gotta do some research into what could be a "death particle". Or somebody else with way more experience then me could take it, I really don't mind.
I have another idea to improve on the mechanism. Let me know if this sounds any better.
The ability for h.b/god particle stays the same, except mass is produced on YOUR side of the field. Also, all mass enters play with a gravity pull (and I change the element from earth to gravity). This creates little suicide mass... I still really do like the idea of the Higgs boson producing mass, and the mass shielding you.
EDIT: YAY, JR. Member now!!!