Iceberg
An Exceptional Site of imperious majesty
Minions occupying nearby sites can't submerge or surface.
Ian Miller

FAQs
Q: Is "submerge or surface" the same as "burrow or unburrow" ?
No, those are different. You can only submerge on a water site, and surface (the verb) from underwater. You burrow on a land site, and unburrow from underground. Note that "surface" (verb) is used on this card, meaning to go from underwater to atop a water site. Sorcery also uses the word "surface" (noun) to mean atop any site.
FAQs
Q: Is "submerge or surface" the same as "burrow or unburrow" ?
No, those are different. You can only submerge on a water site, and surface (the verb) from underwater. You burrow on a land site, and unburrow from underground. Note that "surface" (verb) is used on this card, meaning to go from underwater to atop a water site. Sorcery also uses the word "surface" (noun) to mean atop any site.