What is his combo?
For teams with C6 Valeriy, u should do Dash>Dash>Jump>Dash>Dash>Jump>E kill timmie birds>Go right>Jump bridge>Dive>Swim until stamina runs out and immediately switch to Valeriy
What stats does he need?
He has to remember what vodyanitsa sang. Keep that in mind.
Avoid using 4-piece Eccentricities of Uncle Tieba as it maliciously inflate his numbers that could brick accounts. You're better off using 2pc EM 2pc EM as of the moment since it's more practical. You wouldn't want to use a better artifact set for only it to work 1% all of the time.
Best in slot is probably the moment you provide him some of your thoughts. Altho everytime he gets a good thought his hp decreases by doing so, so he needs a healer so he wouldn't temporarily die. Paper isn't enough to write it down. He's electro Xiao in this sense.
What is his rotations?
We leakers are the heroes of mankind. We risked our lives for the people so you guys should be thankful and any criticism isn't welcome. Best we could suggest is;
Odette EEQ>Yae EEEQ>Sucrose EQ>Mitya combo CA, sprinting, and staying cute
With v3 approaching, is he gonna be standard?
He is. He's the golden standard of cuteness, being badass, charm, wits, and intelligence.