Why anyone would ever use that is beyond me
For example you are hard countered by Magnemite
Heh, well I wouldn't use that set personally, but please allow me to amicably explain why I posted that pokemon and set. ^^ a) It does in fact, serve as a counter to the last pokemon. Very well. b) This thread is a battling & team building section game if I'm not mistaken, and it doesn't break any of the rules in the OP. c) Most importantly, by posting some oddball like that that hasn't been used before, I both give the opportunity to and encourage the next poster to use something of the same ilk that also hasn't been used yet; ie not just a landorus, scizor, garchomp, heatran - etc. So the thread doesn't go in circles or get too full of the same pokemon over and over again.
And hey, it worked :D You used Magnemite. So yaaaay.
Sadly I'm too tired right now to follow suit, so I'll be lazy and just use azumarill to counter
Kingdra. Goodra.
Azumarill w/ Assault Vest
Ability: Huge Power (I'll never understand where 'trait' came from)
EV's: 252 Atk, 252 Sp Def, 6 HP
Adamant Nature
Play Rough, Waterfall, Superpower, Aqua Jet.
Goodra's sludge bomb does like 1/3 Azu's health at best I'd wager, and Play Rough I'm fairly certain is an oh no ko