Sacrifice / Sacrifical Pit?

Is it possible to train another unit using the skill sacrifice?

I tried using Event - starts the effect of an ability, but I can't seem to stop it from training the shade.

And also, is there a way to add to the "Game interface" so that I can add something "Can only target XXX"

Thanks.

I swear it's hard-coded. Instead of bashing your head trying to investigate this, go the possible way and just trigger it off of Channel or something.

Trust me, you could waste your life on this particular spell.

To change the error message, look in the Gameplay Constants and/or Game Interface in the World Editor... there should be a string there.

hardcoded, code self or replave units

I meant adding an error message. Because if I edit the current one, it would affect the same error message used for other errors, wouldn't it?

Yes it would, Death4ngel. I think your best solution is to simply code the whole thing yourself... it shouldn't be that complicated.