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My question is quick. I dont know what the possitional relay offer and how its work.
Positional relay can work but it needs to be used in conjunction with a pathfinder devilfish. I wouldn't bother with it unless you have that particular 'fish in your list.
Mirage Arcana Podcast
The "A Smart Player Will..." theory is a complete paradox. If we make an assumption that everything we do is outsmarted, then theoretically we can never win.
It used to be good in tourneys for an escalation scenario by making the majority of your reserves come in on latter turns to occupy the center.