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LEARN TO STOP WORRYING AND LOVE THE FLARE Whether you see it as a welcome tool for budget players to punch up in Standard, a brutish and uninteresting ladder bully, or a lethal countermeasure for a bloated metagame, the RWx cycling decks are firmly established in Ikoria Standard

The color restriction on Niv-Mizzet's mana cost basically exists to ensure players can't easily splash this Dragon Wizard in Constructed and Limited, but you're already locked to blue and red in Commander, so it's not too hard to get on board

Below is an example to show you common variances

If used during your first main phase, this will leave your opponents without mana for your second, mind you, which can effectively lower their shields if youre going for a combo win