Syndycate Spymaster

Commander ninjutsu{w/u}{u}{u/b}({w/u}{u}{u/b}, Return an
unblocked attacker you control to hand: Put this card
onto the battlefield from your hand or the command
zone tapped and attacking.)
Whenever a Ninja you control deals combat
damage to a player, that player reveals the top
card of their library. If they reveal a non land
card you create a treasure token. You may have
that player put the revealed card on the bottom
of their library.