This might just be because it's difficult to build a cascade-themed deck, especially without some of the expensive big-hitters like Rashmi, Eternities Crafter and Maelstrom Wanderer (which were likely too new and too expensive for Commander 2016 ), but the end result is a deck that is vaguely cascade-ish but not a good cascade deck by any stretch
CONSTRUCTED EVENT TRADITIONAL CONSTRUCTED EVENT CONSTRUCTED SPECIALTY EVENTS MTG Arena Wildcard Rewards Whenever you open a Pack in MTG Arena, you make progress toward earning Wildcards
Or you can alternate cost it for four to ramp a foe, then one to your hand - better than other four-mana options, you might make a friends or help someone dealing with the mana screw
Print them yourself, of course
Not only does that make your tokens stronger, but it means that Edgar Markov gets stronger too
Both are good with Proliferate effects or big splashy effects, I gather you don't like Hailfire or Exsanguinate, but what about weirder stuff like one of the many big mana Wipe Plus cards that Black gets, stuff like Decree of Pain or Necromantic Selection, I think you can find others like Phyrexian Scriptures or even Damnation because it'll miss your Commander