Water terraforming spell?

[OneSoulLegion]

For Nagas specifically, they also have the Water Spring building that will (like the fountains in the Clear Threat mode) spread water around it.

Also, I think Lunord has a spell to create water, but the Nagas aren't big on religion.

 

[OneSoulLegion]

Also note that certain Naga buildings (such as the Harpy and Gorgon buildings) require land, so you can't just turn everything to water. That's what separates you from those bad nagas who drown even their gorgon "allies". =)