The Infinity Constructed format (which allows older cards) tells a different story, led by Amber Steel Steelsong, so always check which format your local event uses
If you control an Urza's Mine and an Urza's Tower, add to your mana pool instead
You will always need at least one left over to make your commander worth it, but in all likelihood, the amount of cards we're talking about drawing off of things like EarthquakeEarthquake means that one spell will be enough, provided Niv-Mizzet isn't removed in response
Normally you wouldn't want to exert a shift target before playing a Floodborn on top of them, but in this case, Determined Defender is a Bodyguard, so it's actually advantageous for him to come out exerted
Its Commander deck is excellent too, packed with beloved characters and top-notch Equipment synergies
Table of Contents show What Are Group Slug Cards in MTG