Ok so here the thing here Neo, If you think about this long and maybe slightly hard, Ardent censer was strong for the attack speed, and on hit lifesteal, now at first I was complaining about how strong it would be now since it is like this.
Ardent Censer - changed
Passive Attack Speed bonus changed to 20-35% based on target's level, from 25%.
Passive changed to 'attacks deal an additional 20-35 damage on-hit (based on target's level) from 'attacks drain 25 health on hit'.
New effect: Unique passive's attack speed/on-hit bonus now applies to the caster when used on an ally.
(here the link: https://www.pcgamesn.com/league-of-legends/league-of-legends-patch-719)
So I thought about this for a while and remember that all of it was in magic damage, meaning the on hit is kinda useless, but the attack speed is the only thing that is strong, the new effect is actually a very good idea, it allows more interaction for the support, they already changing the passive support champions to do a lot more than just sitting back and heal them, now since they do healing and damage through healing others, that makes the passive support more active, making them come up closing into battle being exposed to help win the game, at first this would not be a good idea to start since Janna change allows her to be more aggressive now, but in team fights she now gonna be more expose as well as some other champions hence the forever heal Soraka (my main). This champion can now interact better not making this item so one-sided, I do agree about maybe nerfing maybe some AP or the mana regen, but I'll be straight to say this is a good step and it would be nice to have a passive support to have more aggressive-like style when needed to. Remember that this item would force the support to expose them into fights that would most likely kill them to use that steroid attack speed and on-hit effect to the fullest. On paper, this may sound very very broken, but since the sustain is removed (ht one thing I was hoping it would stay instead of damage) the ADC can't simple gain life back as they have to sacrifice farm to go back to get lifesteal or heal up (if their support is Janna or something that is not Soraka). So it's not broken in the battlefield, hence most ADC champions late game usually gain 2.3 attacks speed or something by late game, the main thing that effective is the increase heal and On-hit damage.