It locks your opponent out of all spell cards while you control a spellcaster & they dont
Generating one or more can be very useful if your deck includes cards that care about the number of artifacts you have
Its likely to stay banned in Commander for those reasons, Id say, even though Ive argued its worth a shot at an unban given whats happened and how much better players are at the game and Commander politics since Prophet of Kruphixs printing
There were matches where I used this to stall for a turn when I was forced to go first or when I couldn't get the key cards together
Essentially all the addictive gameplay elements, filling up an entire index/compendium, befriending a diverse cast of creatures, and becoming the world's best tamer/trainer, are all locked inside the Nintendo vault
It can do a solid 80 damage with Blaze Tackle, with the only downside being that you take 10 damage in recoil