Yxana, Granter of Wishes

Flying

Tap any number of permanents you control: Put a permanent with mana value X or less in your hand
onto the battlefield where X is the total mana value
of permanents tapped this way.

{2}{u}{t}: Any number of target players search their library for any card. Flip a coin, if heads players may
play the exiled cards without paying their mana costs.