Astral Prosthetic

At some point your character lost an appendage and instead of seeking traditional means of healing or regeneration you opted to seek the aide of a choatic artificer. your stump has been replaced with a flat metallic plate that has a small red jewel affixed to it. it grants you the following abilities.

• You can while conscious project a ghostly blue arm that functions normally and matches a strength equal to your wisdom. any check you might normally make that involves usee of this limb you may now opt to use your wisdom instead.
• you gain the cantrip mage hand
• The limb has charges equal to your proficiency bonus. you can spend a charge to do an extra 1d8 psychic damage following a successful melee attack. (you may spend multiple)

The charges replenish after a long rest