Entertainer
Weaponizing the Knight's Game is an interesting concept (though I don't know that it would be that useful in most cases). It also looks like some care was taken to make the move set somewhat different, though the piece's mobility remains static through all tiers -- which is especially harsh since it doesn't start with much.

I don't see how the ability fits the unit's name. I would expect an entertainer to increase morale, mesmerize a unit or draw them closer, perhaps.

Unless I'm mistaken, this unit is colour-bound at all tiers (which, in and of itself, is not a problem, but it is very restricted (it moves far but doesn't have a lot of options, and half of those few locations are likely to be in enemy influence), which makes the colour binding much worse). It has a low cost, but the weakness of the ability (which apparently affects both sides) plus the very restricted movement makes me wonder why anyone would give up a Champion slot to use it.