Talk:Merchant/@comment-27144949-20180712014101/@comment-3509554-20180712032714

Copper Coins gives STR bonus.

Silver Coins gives VIT bonus.

Gold Coins gives LUK bonus.

Platinum Coins gives Max Health bonus.

The skill actually is really OP, if you stack several Platinum Coins in your inventory, your character will most likelly end up with ridiculous amount of health.

Do notice though that the character isn't imortal, though.