Can a land sunk by Deeps be targeted with Powers?
Can a land sunk by Deeps be targeted with Powers?
Yes, but only insofar as it's part of the entire Ocean on that board, and that Ocean as a whole can be targeted (if Ocean's Hungry Grasp is still present on the board).
It's impossible to only target the part of that Ocean that was formally a particular land in the same way that it's impossible to only target the left side of a printed land, or only target part of a joined land created by Weave Together the Fabric of Place.