Мафия 58. Earth Tone

Revan, if he is blocked, does the target still die on the next night or not?

He cannot be blocked, and his ability (curse) works in such a way that the target he attacked previously has a chance to die each night (unless there is natural protection or healing).

Or are the priorities set from left to right?

That is correct.

Revan, does the Mafia have 2 night actions?

Two.