Stonewall Captain

Whenever Stonewall Captain enters the battlefield, you may have it settle target land you control. (To settle a land, attach this creature to that land, placing this on top. If settled land leaves the battlefield, return this creature to its owner's hand. A land can't be settled by more than one creature at any given time.)
Whenever a land settled by Stonewall Captain taps, create a 1/1 white Soldier creature token.