Create healing weapons in two forms, one taking advantage of an alternative energy source (potions) and the other draining health from opponents.

Alternative Energy Source
Have a location to the right of the potion bar that you can drag potions to, that would convert them into energy. This would add charges to the new healing energy. Depending on the star rank of the healing item, a single heal could take different amounts of this energy. Have a toggle box next to the healing energy to use regular mist / crystal energy if there is no potion energy left.

Sword: minimal damage, high knock back. Charged attack "injects" friend with health [on miss no energy used]
Gun: no damage, high knock back. Charged attack fires at an arc (30 degrees) healing the closest target [on miss no energy used]
Bomb: Charged attack creates healing field that transfers a healing status, slowly adds health until status wears off or hit [energy used regardless]

Vampiric Weapons
These weapons have a chance to place a draining status effect on the monster. If the monster is killed while this status effect is active, it the status creator gains energy.
Sword: normal 2 or 3 hit weapon chance for draining effect, Charged attack heals self using energy
Gun: normal weapon chance for draining effect, charged attack heals self using energy
Bomb:low damage, draining effect, no self heal

Ideas, comments, suggestions?