mtg treasure deck commander Prosper, Tome-Bound Cards from EXILE Magic Custom Admiral Beckett Brass COMMANDER DECK

It's a 0/1 Kobold that is casted for 0 mana, and the card text

This reference should make it nice and clear: Penny Sleeves Cheap, soft, transparent sleeves for storing cards in a binder or in boxes

Then the player whose turn it is selects a card from his or her hand and sets it aside without revealing it

Prosper, Tome-Bound Treasure and card-draw Tiefling warlock Prosper, Tome-Bound is a four-mana black and red 1/4 with Deathtouch that does a lot all on its own, but none of that is really combat-based

In a game with shared life totals (such as a game of Commander Archenemy), effects that reference a player's life total use the team's shared life total