Darth Traya, Lord of Betrayal

Flying
Parley — Whenever Darth Traya, Lord of
Betrayal attacks, each player reveals the top card of
their library. For each nonland card revealed this
way, you create a Map token. Then each player
draws a card. (A Map token is an artifact with
"{1}, {t}, Sacrifice this artifact: Target creature you
control explores. Activate only as a sorcery.")