Yuel, Blazing Sword

First strike
Whenever Yuel, Blazing Sword attacks exile the
top X cards of your library, where X is its Power.
You may cast any number of instant or sorcery
spells among them with mana value X or less
without paying their mana cost. At the beginning
of your end step put all cards exiled this way on
the bottom of your library in a random order.
Partner with Societte, Tranquil Mind