Crusade of Revalations

At the beginning of your end step, look at the top
X cards of your library, where X is the amount
of creatures that dealt damage to an opponent
this turn, you may reveal a nonland card from
among them and put it into your hand.

"With every battle, whether won or lost, they
teach us more about who we are and shape our
future as a people"
—Windsor Riege, high battle priest