When the card returns to the battlefield, it will be a new object with no connection to the card that was exiled
Or in Purphoros, Bronze-Blooded, a 5cmc commander full of expensive creatures, a 3cmc ramp card that taps for 2+ mana like Worn Powerstone is ideal because it lets you cast your commander two(!) turns early and start sneaking out your haymakers
Arcades Defender Tribal Commander [c]Arcades, the Strategist[/c] is the perfect defender commander, as Ive mentioned already
Watermark: Air Nomads Illustrated by Yueko Standard Legal Alchemy Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
Spoiler alert, no Door to Nothingness will be found on this list
Finale of Devastation finds you pretty much whatever you need throughout the game and in the later stages offers a pretty easy kill condition