H: Eternal Witness Playmat W: Modern/Legacy staples

I have a brand new Eternal Witness playmat from the recent GP Richmond up for trade. I would like to trade it for cards. Not looking for specific cards, so I'm all for looking through tradelists to work out a deal. The playmats have been selling on Ebay for about $80-90, so I think valuing the mat at $85 is fair.