I fight lost wars, see light, fear sight
I open my mind, need flesh, fear mine
Can you use illegal substitution only on player you just put into play, or you can put player into play and choose player in completly different matchup and injure him in order to replace him?
Any 1 of your players, at any matchup.
Can you use illegal subs. on downed player?
Well, since you are injuring the chosen player; it doesn't really matter if he was standing or downed. So either is fine.
Regarding sewer go map can you place player in one matchup and use sewer go map on your player in different matchup? Or you have to use it on player in same matchup as your just placed player? Many thx in advance
Matchup Actions aren't tied to the playing of a particular player card. They are played (once per turn), 'after' the icons on the card have been used, and the effect comes into play immediately as a general boost.
So you would play Sewer Go-Map at any time during your turn, to help you as you best see fit.