mtg commander 2014 forged in stone deck - Commander You may put an Equipment card from your hand or graveyard onto the battlefield Commander 2014: Forged in Stone

But I still objectively feel like it slides in here perfectly

Although its unclear what exact function Roshan, Hidden Magister will have overall, it does seem to be particularly good in a disguise/morph build in an assassins deck so you can get assassin attacking triggers for those face-down creatures

and exists in the Commander decks

Limit Break Featuring Cloud from Final Fantasy VII as Cloud, Ex-SOLDIER, Limit Break is an Equipment-themed deck, that rewards you for making Cloud hit his 'limit break': power 7 or greater

Eladamris Call Eladamris Call isnt busted or anything, but it might be just what the doctor ordered for helping round out certain Chord of Calling combo decks