Since all the combos require my commander to instantly win, a quick n' easy way to do this would be just to swap Niv-Mizzet, Parun out with a noncombo commander and call it a day: Niv-Mizzet, Dracogenius is a straightforward swap if you still want to keep The Firemind in your command zone, or you can switch to another Spellslinger commander like Kaza, Roil Chaser
Early on, it acts as a Force Spike, but later it might as well be labeled as a hard counter
On EDHREC they listed Rakdos, the Showstopper and Rakdos, Lord of Riots as the 2 most played general for this tribe
I'd be remiss in talking about Green without mentioning all the Elves cards printed in Foundations
The Legend of Kuruk / Avatar Kuruk The Legend of Kuruk lets you Preordain twice before it becomes a finisher in Avatar Kuruk, which acts like a Young Pyromancer
(If a permanent with a stun counter would become untapped, remove one from it instead.) Creature - Homunculus Splash Lasher Offspring (You may pay an additional as you cast this spell
