Trollshaws

Trollshaws enters the battlefield tapped.
{t}: Add one mana of any color in your com-
mander's color identity. When that mana is
spent to cast a creature spell that shares a
creature type with your commander, scry 1.
"These must be the very three that were caught by
Gandalf, quarrelling over the right way
to cook thirteen Dwarves and one hobbit."