Cooper, Mystical seeker

+1: look at target players hand that player draws x cards where x is the number of cards in that player's hand then discards that many cards
-3: Name a card players cannot play the named card for as long as Cooper, Mystical seeker is on the battlefield. -this card can be your commander-
-10: you get an emblem with "opponents play with hands revealed and merfolk have unblockable and whenever they deal damage to a player draw a card."