3 Questions;
1) If you sacrifice a unit, is that unit considered to have been destroyed? Or does it go straight to your discard pile without being destroyed? The rulebook says that a unit is destroyed when it has suffered damage equal to its remaining hit points.
2) If you sacrifice the Fledging Chaos Spawn to an effect will its Forced effect trigger? The Spawn says Forced: After this unit is destroyed do X. See question one.
3) Do you think I should write to ffg about updating the sacrifice rules as it doesn't state that you can only sacrifice your own units nor do the cards themselves say sacrifice a unit you control. A lot of us have played lcgs and tcgs before so we are working on prior knowledge but a new player would not find anything in the rules or cards thats says that a sacrifice can only be your own units.