Tarkir: Dragonstorm and Edge of Eternities also had some really powerful designs, and while they weren't my favorite Limited environments, they definitely added some great cards to Standard (honorable mention, Consult the Star Charts)
There are any number of brutal combos you can execute here, including using Spine of Ish Sah as removal and damage each turn, or using Scrap Trawlers effect in tandem with Foundry Inspector and Sculpting Steel to infinitely loop artifacts in and out of your graveyard
Considering you dont even need to be the one using the removal, the value this card provides is truly wild
From Arabian Nights we've got a signed Serendib Efreet (PL) as well as Khabal Ghoul (GD) and Diamond Valley (PL)
Options include official art from Mario , Relic Knights , Force of Will , Pathfinder , Yugioh , Megaman , and many others