lol
this could be an amazing mechanic.
Chaos Power/Blessing?: +HP and +ATK to your weapon?
Mutation: Idk, this one is a little off the wall.
Immolation: Suicide.
Butterfly Effect: If your weapon ATK<3, you can freely destroy permanents for the usual cost.
Web: owl's eye/eagle's eye could no longer hit over wings shield.
Aflatoxin: 2 poison counters.
Momentum: Weapon gains momentum and 1 ATK, you gain 1 HP and max HP.
Chimera: Creatures absorb into your health?
Acceleration: +2 atk to your weapon, -1 HP (and max) to you per turn?
Plate Armor: Up max health and current health by 3 (6upped)
Basilisk Blood: Gain 20 HP, weapon is in time bubble for 6 turns.
Iridium Warden: Weapon is guardable.
Rage Pot: 5 atk to your weapon, -5 hp to you.
freeze: freeze weapon.
Lobotomize: weapon loses its ability (i.e. sniper, momentum)
Luciferin: Add one for Hope.
Holy Light: If you have Death/Darkness mark, lose 10 HP
Guardian Angel: can heal you
Reverse Time: Put weapon back in deck?
Quintessence: make weapon immortal?
Liquid Shadow: weapon is vampiric, 1 poison counter to you
Nightmare: erm...glitches?
Pandemonium: random things
Parallel Universe: random creature with a lot of HP?
Fractal: see PU?
that's all I got.