CheckName Doctorate

Plan 6 - {w} (Rather than cast this card from your hand, you may pay {w} and exile it with six mana counters on it. At any time you may play a sorcery, you may pay {1} to remove one counter from
it. At any time you may play a instant, you may
pay {2} to remove one counter from it. When the
last is removed, you may cast it without paying its mana cost.)

Destroy all creatures.