Well of Life now passively heals allies in a radius around the target (base 100 Health per second within 8 meters). Shooting the held target gives extra Health to all allies in range (base 1% of damage dealt to the victim) instead of only the person who made the attack.
Well of Life also no longer increases the Health of the target (this was an old solution to prevent other players from killing the target too fast). Instead it now uses a more modern approach similar to Nyx’s Mind Control where the Damage gets stored and dealt at the end of the Ability.