Kind of OP, the plains, because you can tame it ;-) - and this might be easier than some guys might think, since everywhere there are these cloudberries in groups of 10 to 15. Just be careful during night time, when additional mobs spawn(Fulings with torches). The Tar Pit update involves the "growth" blob which is related in friend/foe recognition to the swamp blob (heed that, when fleeing towards the swamp with a "growth" behind you (very bad idea). So you can play diplomat in the plains around tar pits ;-)