Valmar, Essence Chemister

When Valmar, Essence Chemister enters the
battlefield, exile target creature you control other
than Valmar, Essence Chemister. For each
creature you exile this way, reveal the top card
of your library until you exile an instant or sorcery
card. Until end of turn, you may cast instant and
sorcery cards exiled this way without paying their
mana costs. Put all other cards exiled this way on
the bottom of your library in any order.
Overload {3}{u}{u}{r}{r}