Amulet of Giantkind

This necklace of a figure of a giant is oversized and heavy for a medium creature. It hangs down to the waist.

The amulet has 6 charges. 1/day you can cast Enlarge on yourself or another creature by touch. Up to 4 charges may be used at a time. The spell is same as Enlarge except each charge increases the targets size by one category, each category larger increases reach by 5', movement by 5', weapon damage/unarmed strikes by d4,  and +1 on strength saves and ability checks.

To recharge the amulet one must soak the figurine in blood of a freshly killed true giant or any gargantuan creature for 24 hours.