press infuser before barrel chaining for extra damage and healing. infuser+cold front on jungle camps is decent healing. replace regen with healbane
rite if 1hp, resto shot if hard lane
improved cd for first flex slot preferably, only sell infuser if you're completely struggling with slots. sell infuser later for imp burst or reverb slot. hs booster/hp ward are sold for 3k oranges
defensives, enchanter's and enduring will be replaced in long games