Lucy, relentless thief

hexproof, unblockable
partner with Brayden, unseen menace.
whenever Lucy, relentless thief enters the battlefield or attacks each opponent exiles the
top card of their library, you may look and cast
those cards for as long as they remain exiled
and spend mana as if it were mana of any colour.
other creatures get +1/+1 equal to the number
of permanents you control but don't own.