Curse of the Downfallen
The Grey Havens#71 (x2/x0)

When Revealed: Deal 1 damage to each non-objective ally with printed cost 2 or less. Place each ally that is destroyed by this effect on the bottom of its owner's deck.

Shadow: Discard the bottom card of your deck. If that card's printed cost is 2 or less, attacking enemy makes an additional attack after this one.