Prinzessin Fischl

When Prinzessin Fischl enters the battlefield, she creates a Blue and Black Oz token. (A 3/1
Elemental Bird Creature token with Flying, haste,
and "Whenever Oz attacks, you may look at
defending player's hand. Sacrifice Oz at the end
of the turn. You can only control 1 Oz token")
Fischl deals 1 damage to target player any time
you draw a card, if Oz is on the field when this
effect happens, then target player must also
discard a card.