Wandering Mount

Wandering Mount enters the battlefield tapped.
{t}, Exert Wandering Mount: Add {r}. (An exerted permanent won't untap during your next untap step.)
{4}{w}{r}{g}: Until end of turn, Wandering Mount becomes a copy of target creature, except it has
base power and toughness 8/8, and is a
Elemental Shapeshifter land in addition to its
other types.