Glorious End
Oracle Text
End the turn. (Exile all spells and abilities on the stack, including this card. The player whose turn it is discards down to their maximum hand size. Damage wears off, and "this turn" and "until end of turn" effects end.)
At the beginning of your next end step, you lose the game.
Card Rulings
4/18/2017 Ending the turn this way means the following things happen in order: 1) All spells and abilities on the stack are exiled. This includes spells and abilities that can’t be countered. 2) If there are any attacking and blocking creatures, they’re removed from combat. 3) State-based actions are checked. No player gets priority, and no triggered abilities are put onto the stack. 4) The current phase and/or step ends. The game skips straight to the cleanup step. 5) The cleanup step happens in its entirety.
4/18/2017 If any triggered abilities do trigger during this process, they’re put onto the stack during the cleanup step. If this happens, players will have a chance to cast spells and activate abilities, then there will be another cleanup step before the turn is over.
4/18/2017 Though other spells and abilities that are exiled won’t get a chance to resolve, they don’t count as being countered.
4/18/2017 Any “at the beginning of the next end step” triggered abilities won’t get the chance to trigger that turn because the end step is skipped. Those abilities will trigger at the beginning of the end step of the next turn.
4/18/2017 If Glorious End’s delayed triggered ability is countered, it won’t trigger again. The same is true if it’s removed from the stack in any other way (such as by a second even more Glorious End) or if it resolves and you don’t lose the game (perhaps because of the emblem of Gideon of the Trials).
"Nope. We're done. Screw your spells, I'M GOING AGAIN!"
Not quite as good as a full extra turn for an aggro deck, since your opponent will get to untap, but you can leave them hopefull tapped out after they try to play something on-curve, leaving you a turn ahead on board presence for your last turn.
"You got your Final Fortune in my Time Stop!"
1) Your end step that turn is skipped
2) The opponent's next end step is irrelevant (as it only triggers on your next end step)
3) The end step in your next turn is 'your next end step', and the trigger causing you to lose the game goes on the stack. If it resolves, you die. If it gets countered (Stifle) or otherwise prevented from resolving (Sundial of the Infinite), the game goes on as normal and the trigger will not trigger again (not even during your next end step after that).
Interestingly, as someone else already pointed out, this means you can use Glorious End to skip the 'you lose the game' of an earlier Glorious End.