Hoopa, Bound

When Hopa, Bound, enters the
battlefield, you lose ten life.
{u/r}, {t}: Put a ring counter on Hoopa, Bound,
and search you library for an artifact card with
converted mana cost 2 or less, reveal it, andput
it into your hand. Then, if there are 6 or more
ring counters on Hoopa, Bound, exile him,
and return him to the battlefield transformed
under his owner's control.