[Amhazair]

Freespawn nations (such as LA R'lyeh and Ermor) can put swamping tactics to good use, as they have so much chaff that you can afford to attack every border province every turn, and don't care one fig whether all the guys they sent out get killed or not.

If your opponent puts somthing in their path, that's a bit of resources he's not using to otherwise hurt you. If he doesn't put something in their path, well... that's one lost province. And if he really sends something consequential away from the safety of his main armies or forts to deal with your chaff, you can then teleport something designed to deal with it right on top of him.