Well, the one thing I was thinking of was Scry abuse. But... I don't know, I guess you scry what you want to the bottom and then exile something from your hand? How does that exiling work with the new eldrazi?!?!?
If I ever sleeve up my cube again I think I'll test the "additional cost" thing. It could be incredibly stupid, but I would like a thing that decreases mana screw while still giving the players interesting options and choices.
This is a thread to discuss the new ideas coming from rival forum BTP.
I know most of their stuff is pretty bullshit for the sake of being bullshit, but this one struck me as interesting. Obviously it's one of their tamer (more usable) ideas.