Conscious Hedrons

When Conscious Hedrons enters the battlefield, each opponent exiles the creature he
or she controls with the highest converted mana cost until Conscious Hedrons leaves the battlefield.
{c}{c}{c}{c}{c}: Put five +1/+1 counters on Conscious Hedrons and it becomes an Eldrazi in addition to its other types. Activate this ability only if Conscious Hedrons is not an Eldrazi.