That moment when polymorph summons an OmegaWyrm, or for that matter, that moment when any summon ability actually summons something decent
That moment when you think you might stand a chance and win then just as quickly lose
That moment when your opponents get several bonus actions and you just want to crawl into a hole and die.
That moment when you find a hatchling on DIB on your first try.
(This actually did happen to me 
)
Wrong game, Lad
That moment when you watch someone who hacked the game fail to beat you
Not the first to do it 
That moment when you buy a gold egg,your ipad dies,and you lose your egg AND your gold.
That moment when facing a havker on pvp and he dc on me
The moment when an enemy team does a whooping 8 bonus actions… And then his next one does 10 killing your entire team before you could do anything.
Graaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaah!
That moment when you beat the game 
That moment when you don’t even get a deltoid from one of the 24mission eggs
That moment when you realize the spot you have been farming for two days is not the right one
That moment you waste a gold card on a seaquill, cause it blocked it.
That moment when you are farming for an S Rank…and you get several copies of every S Rank in the area EXCEPT for the one you need.
That moment when every single egg in the online mission gives you Arkadions you already have and just to kick you while you’re down the last one is a Deletoid so you can look at it knowing what will never be. (Literally got 7 hedgehots)
That moment when there are 3 S Deletoids in a row, and you pass all of them by a millimeter.