I loved the other version of this card (now in SOR Block Storage), but this seems a lot less controversial and probably more in-line with what’s currently going on in the set.

Big-time reboot here. Still gets the same job done, but in a way I haven't seen before.

Besides not being instant speed, how is this not better than Shatter? It even sacrifices indestructible and regenerating artifacts... I'd think that that alone would be a reason to make a sorcery speed shatter...

Strictly better than Metallic Mastery, and that was printed in an artifact set.

I'm not sure the "strictly better" argument matters so much in this scenario, simply because this isn't an artifact set, so the card is significantly more niche. And in the grand scheme of the game, will this suddenly become a constructed staple?

That said, that it's so out-of-place would suggest that it's probably best suited to Uncommon at the least.

Our first play test showed that there are definitely enough pain-in-the-ass equipments to warrant a common artifact removal piece. It could easily have broken the other way — to be an uncommon — but to not have something on these lines available as a late-pick common would have been a pretty big hole in the defenses of the set.

I'd go with Metallic Mastery's template and always grant it haste. Otherwise this is less useful on self-animating artifacts like Chimeric Staff, Glint Hawk Idol, Xanthic Statue etc.

I raised my eyebrows at this as well, but if you need a common artifact-destruction spell then this seems fine.

Would it be wrong to state that this is to Metallic Mastery as Slave of Bolas is to Act of Treason, except for rarities? Why should this be allowed to cost less than its non-sacrificing counterpart?

That's a pretty good point. I could narrow the card to only hit non-creature artifacts, which would help to avoid haste questions. Given that the majority of artifacts in the set are equipment, it wouldn't affect the usability of the card much.

It's probably even more flavorful to have it simply be a revision of Magnetic Theft, considering the name:

"Gain control of target Equipment. Sacrifice it at the beginning of the next end step."

I'm still not sure it'd be appropriate for Common, but if the set demands it, then I'd say do it.

This way, people may not realize that you still have to equip it to gain the benefit. Otherwise, whatever it's already attached to remains equipped.