Corwinnn, Redwall Guard

Corwinnn, Redwall Guard and other Squirrels
you control each enter the battlefield with Leaf
counters on them
Whenever a Squirrel you control attacks, each
opponent exiles the top card of their library equal
to the number of Leaf counters among Squirrels
you control. You may cast any amount of cards
target opponent exiled this way without paying
their mana costs