Bedrock for advantage in mana, Sinkhole to activate Roots of Yggdrasil , and your opponents hesitation for both card advantage and field advantage
Dragons, Slivers, or Allies will make the best use of this, but Vampires and Dinosaurs will still be happy to run a Pillar in the 99
Rather than focus on webbing up your opponents' creatures, we focused on the rescuing and swinging in (unexpectedly) aspects of web-slinging
You want card quality to get in the way of your ideal curve as little as possible
For each card exiled this way, search that players library for all cards with the same name as that card and exile them
In all his incarnations, hes Grixis through and through