Atarnos, Bestower of Boons

Whenever you promise a gift to an opponent,
draw a card.

Spells you cast have "Gift a tapped Fish. If the gift was promised as you cast this spell, it costs {1} less to cast."

Whenever Atarnos attacks, you may cast a spell from your hand as though it had flash with mana value less than or equal to the number of times you have promised a gift to an opponent this turn without paying its mana cost.