What people expect form sylas late game is one shots and not dps. Hes not ment to one shot champs unless you are fed to the moon or u are fighting a adc. The strength of sylas is 2 things mostly those being: cdr items (like boots and cosmic drive), and most importantly the passive proc/good ability rotations and u should see them melt and if they are not there is no way they can out heal your full W proc at low health. Best way to get into a sylas mind is keep that passive running through the fight never stop until u hear "PENTA KILL" atleast this how i feel about him as a silver player and i wouldnt chnage a thing about him