For small amounts of milling, its more efficient than Bruvac the Grandiloquent, and its excellent with some Persistent Petitioners
Prices vary significantly between sellers
Each of these cards can be found in Play Boosters and Collector Boosters, and they're legal in Limited when you open them
At the beginning of your upkeep, remove a time counter from it, and when the last is removed, you may cast it from exile without paying its mana cost
Any stalemate situation Creeperhulk will end things the turn after you make him, in super late game situations or ones where you have gotten them to low life you can activate it right away and finish the game on the spot
Instead of holding on to vestiges of a theme that won't net us many victories, we're adhering to a tried-and-true Commander strategy