Unicorn Medallion

When Unicorn Medallion enters the field, declare a color, all creatures you control of chosen color gain Goad until Unicorn Medallion leaves the field

{t}: Target creature gains Skulk until end of turn if
the Lion Medallion or Maiden Medallion is on the field, target creature gains Shadow instead

"A large ornamental medallion adorned with a relief
of a mystical unicorn." — Inventory description