Path of Ancestry

Path of Ancestry enters the battlefield tapped.
{t}: Add one mana of any color in your
commander's color identity. When that mana is
spent to cast a creature spell that shares a
creature type with your commander scry 1.
—
In a long forgotten corner of Zephyr Heights, Sunny Starscout discovered what she was looking for: proof
that all pony kinds did indeed used to be friends.