In exploratory design (which sadly wasn't in our database), we tried a version where Mishra had six different activated abilities, each with its own mana cost
Number 241 Language English Legal Formats Commander, Legacy, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Historic, Pauper, Pioneer, Standard, Timeless Rulings (12/1/2004) Mycosynth Lattice turns all permanents on the battlefield into artifacts
This means that you can effectively untap mana rocks such as Sol Ring or Mana Vault or loop powerful enters-the-battlefield triggers such as Dockside Extortionist or Spellseeker
Creature Artifact - Scarecrow Color tag templates(None) Shepherd of the Cosmos Flying When this creature enters, return target permanent card with mana value 2 or less from your graveyard to the battlefield
The tour ends in the only place it can, with the card to rule them all, or, if things get desperate, to pay the next few months' rent