Potara Earing

When Potara Earing enters, if it isn't a token create a token copy of Potara Earing attached to a creature you control.

Enchanted creature has "Fusion partner" (when two creatures with fusion partner attack at the same time under your control you may sacrifice both and create a fusion warrior creature token with double strike, and power and toughness equal to total power and toughness among creatures sacrificed this way)