Id play this as a threat with some upside, but its not a must-have by any stretch
Turn into Jodah's Avenger, use its ability to give Volrath double strike, and while it's still on the stack turn into Blighted Agent to attack with an unblockable 7/5 double strike infect creature for an easy kill
As good token generator (but not in the tribal theme), you can look at Creakwood Liege (which buff your creatures in addition to create token), Emrakul's Evangel (similar to Nested Shambler), Growth Spasm (correct ramp but will create you a token), Khalni Garden (land that create a token !) or Tireless Provisioner (which I personally don't play, but you have some food synergies in the deck)
If you have some counters and some mana, it makes combat anywhere difficult for your opponent and lets you pick off utility creatures, and the base stats help give you time to grind out an advantage with this kind of thing, especially if you have a lot of evolve or scavenge to keep it fueled
Persistent Petitioners Persistent Petitioners is the most important card in the deck , arguably moreso than the commander itself
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