Hate this forum search , cannot limit the search to a sub-forum like this one, so i cannot be certain if this has been answered or not, possibly in the context of Seduced By Darkness.

Question:

Can i successfully corrupt a corrupted unit, or the effect fizzles?

Im asking because of Chillwind, which states "Action: Corrupt one target unit. Then you may restore one corrupted unit."

I know that the second effect will only kick in if the first succeeds; my question is if i can use this on an already corrupted unit, and then un-corrupt an unit, or if the first effect is invalid, and thus the second does not kick in.

that would not work, for the card to work the first part must be played in context (currupting a unit) to its effect in order to use the second part (restoring a unit), and since you wouldnt be currupting that unit, the first half wouldnt be finished properly so the second part would be able ocome to effect.

When the word 'then is in the card text the player must complete the part before the then before he continues to the second part. I believe the FAQ talks about that.

Hope this helps

It did, in an indirect way .

I know about the "then" requirement, stated it in the first post.

However, by going back to the FAQ to re-read the section you mentioned, i noticed the "Warp Lightning Cannon" entry, which says:

'Can be played on an already corrupted unit. The "corrupt that unit" effect is cancelled.'

which means that we cannot corrupt an already corrupted unit successfully, thus invalidating both actions of the ChillWind (because of the 'then' clause).