This means that they can attack and use activated abilities with the tap symbol on the same turn they enter the battlefield
Dynamic Gameplay: The goal of gameplay isnt simply to knock out your opponent, but to race to gather lore points
This deck did a great thing in enabling top-deck the way it did, giving us unique commanders that are well-loved in various ways, and it even provided a few quirky new cards that have homes in several different places
Signing off on behalf of the Commander Format Panel, Alex Heyer Bandit Ben Wheeler Deco Ittetu Josh Lee Kwai Lua Stardust Olivia Gobert-Hicks Rachel Weeks Rebell Lily Tim Willoughby Toby Elliott Tomer Abramovici
While that's not the most terrible idea, the likelihood in a Niv-Mizzet deck is that the other spell you're casting is a burn spell that could do the same, and I have to feel that you're going to be better off casting it by itself, rather than putting all your eggs in one basket