Life Element
Cow + Knife = Meat + Blood + Skin
Cow + Tools = Skin
Skin + Sun = Tan
Skin + Wood = Drums
Skin + Heat = Sweat
Ink + Skin = Tattoo
Thorn + Skin = Sting
Static Charge + Skin = Shock
Skin + Lime = Leather
Skin + Lye = Leather
Skin + Aluminum = Leather
Feather + Skin = Tickle
Elder + Skin = Wrinkle