This effect benefits both you and them, so chances are, smart players will consider their options carefully, but with Nellys goading influence in play, you're often setting the board up so that opponents have no choice but to swing and draw you cards
It's a pretty simplistic card, but it does a hell of a lot of work
Way back I used to play a Rakdos aggro deck that, in a particularly good hand, was dealing 15-20 damage on turn 3 or 4
Moonsnare Prototype, Ensoul Artifact, and I am high on Disruption Protocol as a counter spell, which this curves well with
100-Card Singleton: Your deck must contain exactly 100 cards, including your commander
Selfless Safewright could make a case for being more offensive and counting as a creature, but it also costs one more, and the reality is, you want both options in your go wide decks