Etrata, Dimir Champion

When Etrata, Dimir Champion enters the battlefield, surveil 1.
Etrata can't be blocked.
When Etrata, Dimir Guildleader deals combat
damage to a player, put a strike counter on that player, then return Etrata, Dimir Guildleader to
your hand. Then, if a player has three or more
strike counters on them, that player loses the
game.