Feeling Ivern could use buffs still, and thoughts on W's passive.
Ivern could use lower early rank CDs (rank 1-4 abilities), W grating assist, removal of daisy for E targets and just automatically E her when an ally or yourself are shielded, and lastly improving daisy's AI a bit(Attack nearby winions/objectives if no hampion is near) and only doing the 3rd AA if 100 units closer to the target.
On a side note, I still feel the self-AA bonus ivern gains was bad and out of place, giving him range increase if he was in a bush is fine but I feel like allies should get the extra damage portion or some other bonus for being in ivern's special bushes. W entirely just feels lackluster early game, and only good for bush placement late game when you can sneak objectives or setup teamfights around bushes. But with all the playmaking ivern does with Q, E, and R there's really no point in forcing several AAs off to get the W's passive to work (Thresh's personal AA empowerment is fine since it rewards him for focusing on playmaking which usually delays AA'ing.) All other supportive champs with AA-enhancements usually offer it to teammates(Lulu, Nami, Janna) or have a wide variety of things they can do with the AA-enhancement (Sona, Thresh, Leona).
So yea I still feel the personal AA-enhancement ivern gains is a waste. You're far too squsihy and don't have any reason to be dps and it really does not offer much early game.