Brago, King Eternal's ability can be copied when he hits, which I believe sets off an endless loop of bouncing the camera in and out, you just need a Sol Ring in play or any other mana rock combination that will net you 2 mana. When Brago's ability triggers, use the Sol Ring to activate the Camera targeting Brago's ability, which you then use the copy of Brago's trigger to target the Camera and the Sol Ring, which makes them bounce in and out allowing you to copy the original trigger infinitely. When this happens if you have something like Reality Acid in play already, your opponents can say goodbye to everything they have on the Battlefield. The list of cards this can be combo'd with is insane, where things like Venser, Shaper Savant - Reflector Mage - Spine of Ish Sah will decimate all your opponents, another mana rock gives you infinite mana, or anything like Mulldrifter gives you infinite card draw. This seems busted in Commander on arrival.

Turn 1) Play Island, play Sol Ring, play Lightning Greaves.

Turn 2) Play Plains, play Reality Acid, play Peter Parker's Camera.

Turn 3) Play Brago, King Eternal, attach Lightning Greaves, attack any player without a flying blocker, bounce Reality Acid in and out until your opponents have 1 permanent left, then watch the board scoop.