Amulet of Enlarge/Reduce

Allows the wearer to double in size, or shrink in size. When growing to double size you must roll a strength and constitution check. You roll the constitution check of 7 + your constitution modifier of a D12, on a success you can handle the mass, on a fail, you fail to support your weight and take 1 D8 of damage each turn till you meet the required roll; furthermore, you will also roll a strength check of 7+ your strength modifier of a D12, on a success you're able to move normally, on a fail, you are unable to lift your weight and you can't move till you reach the roll. When shrinking, you roll a 7,+ your constitution modifier to shrink to shrink your bones with your body, on a success you shrink, on a fail your bones struggle to handle the compression and take 1 D8 of damage ; as well, you roll a 7, + your dexterity modifier of a D12, on a success you can move properly, on a fail you are unable to walk properly, unable to move.