Crit item rework response
Essence flare as an effect is so valuable for so many champions that it forces really shitty builds and overoptimized synergies with things like conqueror
putting essence flare into a keystone in the sorcery tree would pop it into a place where those who abuse it most will commit their runes
and those who can't really afford that item in their builds will have access but at the cost of potentially better minor runes 
i would change the trigger too, maybe making it a boot item active (Like predator) that can be activated after a threshold of spells have been cast. with that number not needing to reduce itself as the game goes on creating a natural curve of more usability as the game goes on and less usability at the earlier stages of the game
I would fully revert essence reaver to its season 7 incarnation, and I would not alter spear of shojin but would include either it as a melee only item, with maybe special exceptions for
in their melee forms but still inactive, or would simply have it grant half effectiveness on ranged champions and forms (So again jayce or gnar in ranged form would have half effectiveness, but in melee would become tankier)
would make it a great item for those light fighter/ mobility bruisers
Now another item has been made a bit weaker because of the surrounding items all being changed
now is functionally less valuable, and with essence reaver being lost by spellweaver casters I'd reccomend it being a crit-sheen item
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Mana+cdr+ad+attack speed Spellblade: after casting a spell your next attack will be a crit Energized attack: your energized attacks grant a burst of movespeed and deal base shard damage. Lower energy will apply a % of the effect based on the number of stacks you have Energize passive: Casting spells, moving, or attacking energizes your attacks
Adding to Fleet, static, and rapid fire functionality, this makes your lower levels of stacks deal the burst damage as on hit effects that could never be affected by rageblade, effectively making you an on hit+caster hybrid
Don't change to a lifeline passive, adcs are supposed to be sustained damage fighters, make this a sustained combat defense up, so give it 5-20% damage reduction over 1-5 seconds maintain by attacks within 3 seconds of eachother
Lifesteal crit item?:
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+300 gold
30 ad and some crit+a/s becomes 50 ad, 25% crit, 30% attack speed. passive makes lifesteal more effective with each consecutive critical strike
This is fine
I think it needs something minor, maybe a build path issue? Like we have 900 gold to play with, so maybe a new item?
x2+300 gold= You're basic attacks fire an additional projectile which deals 30% damage
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And whats this item called again?