Runes are flooded with it, potions are everywhere now. Items have + healing and those who often heal (supports) are flooded with ap/mana/cdr to spam healing. So many new champions/reworks have healing in their kits. Then to top it off everyone just buys corrupting/refill potion so there is no potion cost for taking poke (if you don't have enough from runes to sustain.
The games legit just a try blow everyone up in .5 seconds from full. There is no managing your health/mana/cds.
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