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You can also cast Zacama, Primal Calamity on the cheap and still untap all of your lands to have access to even more mana to use to cast Dinosaurs or activate Zacamas abilities

If you've been on the hunt for a new commander and want to give Squirrels a try, you're going to want one of these commanders

Other goodies can be bought by different methods

Moving into Izzet, The Emperor of Palamecia is a manadork that adds red or green mana, but it can only be used to cast non-creature spells

Youll get to fix your next draw and possibly draw an extra card, and theres never an actual risk that Gollum dies to a blocker