Osyris, Prophecy Returned

Plainswalk, Mountainwalk
When Osyris, Prophecy Returned enters the battlefield or attacks, scry X then draw X cards
where X is the amount of spells you've cast from
exile this turn.
Whenever one or more cards are put into exile
from your hand or deck or a spell or ability you
control exiles one or more permanents from the battlefield, put a +1/+1 counter on Osyris,
Prophecy Returned.