I get that, as long as you have one of the many Gideon planeswalkers, it is in effect, but how will that manifest? If you are reduced below 0 life, the game just keeps going? If your library is milled out entirely, do you just keep playing with whatever you have in the battlefield? If your opponent has 8 or more Mechanized Production artifacts, the game just keeps going?

Wonder if it will crash Duels?

Totally must try that, but in all truth the system could just let the game keep going.
Gideon itself can turn in a creature and attack, so even in a scenario with no cards left in deck and hand, no creatures on the board and no GY interaction, it'd just let each Gideon smash the other one's face.

Who's up for trying that in a video? Just a WU deck with Gideon, Call the Gatewatch and a ton of Blue draw spells until we both hit Gideon.

Other Gideon just +1's your Gideon. Have fun.

You don't understand, it says "as long as control a gideon, you can't lose" that means you can't quit, if your internet goes out the show must go on, you'll be stuck there, playing Duels for all eternity as guess what? You can't die, not even in real life as it'll break the rules.

I waffle on this Gideon. He's certainly no Ally of Zendikar.

On the one hand, he's a competent beat stick. And his +1 kind of protects himself....but what deck is he trying to go in? Is it control, just trying to be a renewable beater that dodges removal, ala big Gideon? Aggro as....something? He really doesn't fit aggro.

Midrange as....I guess a generic 4/4 most of the time?

Maybe I'm being overly pessimistic, but is he even better than 3cmc Nissa? He's certainly worse than 3cmc Lili.

You don't understand, it says "as long as control a gideon, you can't lose" that means you can't quit, if your internet goes out the show must go on, you'll be stuck there, playing Duels for all eternity as guess what? You can't die, not even in real life as it'll break the rules.