Spacehammer

From Gempunks
Spacehammer
Magic Weapon
This is a laughably tiny hammer.
[ Muscle-Damage ]
Value 300 copper
Weight 0.5 kilograms
Damage: 1d6-2 Physical
Handedness: The hammer can be wielded in one hand, or two hands for +1 Damage. If wielded in one hand as it expands, it is dropped after one attack.
Effects: The hammer can expand when used to attack. Doing so causes it to deal +2 damage and get +1 Demolition, but become a Heavy weapon for that attack.
Every wound inflicted by the hammer halves the target's size and reach for 2 rounds.