Deep Maelstrom
The Thing in the Depths Nightmare #8 (x3)
Treachery

When Revealed: For each location in play that is not grappled, reveal the top card of the encounter deck. If no cards are revealed by this effect, Deep Maelstrom gains Doomed 5. Cannot be canceled.

Shadow: Attacking enemy gets +1 for each enemy grappled with a location.