Nifft
Penguin Herder
See, the pushing thing is fine. It's the teleporting thing that's not fine.Does it create an imbalance? No ... just remember that monsters get to push players over cliffs too.
Now teleporting folks 10 squares into the air is a different story and there are rules that keep the movement horizontal.
I have zero problem with someone teleporting a foe into a position where he can then be pushed off a cliff -- in fact, I think that's awesome, and hope to try it soon. That's because there are rules for pushing people off cliffs. There are no rules for preventing yourself from being teleported into the air or off a cliff.
Worse, allowing teleportation off a cliff but not teleportation into the air in the absence of a cliff encourages PCs to carry a portable cliff (ladder, wooden wall, whatever). It's a stupid thing to encourage; it's a bad mechanic to allow.
Cheers, -- N