While it may not affect the board state at all, with your commander down, it's a two-mana, draw 12 deal, which seems like a pretty good deal
The angel Aurelia approached
Niv-Mizzet, Supreme Niv-Mizzet, Supreme lets you build a jump-start theme deck using multi-colored instants and sorceries
These cards introduce new effects that enhance deck-building strategies and bring fresh options to tournament play
It's not impossible some Affinity-style artifact deck develops in Standardthere are a lot of good artifact support pieces from The Brothers' War and Invasion of Kaladesh could be a part of it, although I would expect it to be more of a role player than a foundation of the deck, if it even makes the cut at all
Your creatures become so big that trample is often better than flying anyway, and the fact that this one isnt instant is not that relevant as you dont have to choose a target for it, so you dont need to use it as a combat trick