It should be possible to cast a gate to a servant, where ever it is, if one
has the mastery trained high enough.
How about undoing that tune from a few years back to centaurs. Give them back
unlimited walking eps.
We could do this in a more Realistic(TM) manner! Horses can run themselves to
death, right? So hide the EP cost and for every time you are in -ep and move
there is a small chance that you die of exhaustion!