Well, since the Flash Clash online competition ended (the one where you basically have one on one battles), I feel like sharing some funny things that happened.
In one battle, I had my Vaporeon up against a Chansey, that I think was holding an eviolite. I start with Rain Dance for the boost in Water type moves and the Chansey went for a Toxic. Thankfully I had Hydration as an ability so I didn't have to worry much. The Chansey then switched to Seismic Toss for the 50 damage, which adds up, but Scald was my best attacking move and it did very little, so I had to depend on slowly chipping away at it's health and rely on Leftovers + Wish for recovery. At this point, it was a stall battle, since the Chansey had Softboiled. I was only able to win with a Time Out because I used Wish on the second to last turn, giving me more health.
Another battle I had was with my Avalugg against an Articuno. Articuno tries to use Sheer Cold, but Avalugg had Sturdy and since Sheer Cold can only Knock Out, it did nothing and I lost no health. Then Articuno used Sheer Cold again, probably hoping that Sturdy wore out, but it still did nothing. At this point I asked myself "Is that all they have?" *Your opponent forfeited* "That was all they had!"
I can relate to that feeling of hopelessness though, with this one battle that I was using Avalugg against a Shuckle. My Avalugg could do nothing as that Shuckle just kept using Shell Smash. Shell Smash decreases defensive stats while increasing offensive stats, but that Shuckle had Contrary, which means increase in defense and decrease in the offense it doesn't need. A combination of Toxic and Infestation brought me down to half and even when I used Recover, I wouldn't even make a dent in that Shuckle. Once I saw it use Rest, I new it was time to give up, so I forfeited.