Aerid Konstrari (Showcase, Borderless, Foil)

'Flying
When Aerid Konstrari enters or dies, create a Heartwood token. (It's a red and green artifact with "{T}: Add {R} or {G}.")
{6}: Create a Heartwood token. Then Aerid Konstrari gets +X/+0 until end of turn, where X is the number of artifacts you control.