good deck^^
but since you have 2 kycoos + 2 Diamond dudes, u need to add cards to protect them like bottomless or D.Prison
also i'd add 1 more valley and take out Foolish, Foolish is good for Frog and Malicious but that's why u have Trooper / PWWB / etc. ...to discard them.
and about this deck doing good in YOC, yes .. it will, but u can't only use 1 deck in YOC cus u'll get countered, let's say .. using this deck u will have problems vs a Simochi-Burn and maybe Gadgets
but it will do good vs Norleras and Lightsworns
if you have Good draws.
also don't forget to add at least 1 Chimeratech Fortress Dragon in your Fusion Deck.
so, for YOC .. this is what i think:
- 1 Foolish
- 1 D.D. Crow
- 1 Raiza
+ 1 Caius
+ 1 Phoenix Wing Wind Blast
+ 1 Cyber Valley
and for match duels, your Side Deck needs a lot of help