Lane Phase
Early Gun dmg + Spirit Power
Infuser for jumping in
Optional
Early heals + Grenade spam
Lane/Early
Supressor for Quality of Life/Counter or Arcane Surge for longer durations
Mid/Late Mid
Imbue all on Beam, SOP for Beam or Ice Path
Support Items
Fleetfoot & Heroic Aura great for Ice path Speed
Late Optionals
Late Quality of Life items
Alchemical For Ult
Kelvin SKill build
Kelvin Build Description
Lane phase: Most time you'll use gun, use Beam and Ice path SMARTLY, cause of long cooldowns (Make sure to coordinate with teammate before going in).
Lane/Early: Basic items for further down in Lane or entering Early game, I suggest EB and MV for more damage (Also don't be afraid to T2 Grenade for extra heals).
Mid/Late: You will need to Farm and join team fights from here on out, buy whichever suits your need (I recommend IR, SC, any Support item, SOP along with Arcane Surge).
Late game/Endgame: Buy escalating first, not only an increase in damage but also supportive for teammates also using spirit, rest you may do in order or choose (For Qaulity of Life I recommend one armor of your choice, keeping one support item, and Leech).
Extra Notes: You should have enough room for Alchemical Fire, and should you center you build around 4/Ult, Diviners Kevlar is there.
Mystic Slow is there should you not feel the need for Arcane Surge or you just hate Guns.