Generally it's a fun champion, and definitely add to the selection of supports, but I'd still prefer Janna/Sona!
Q - hard to land with slow landing speed and a very small AOE
W - heal does not scale nicely but can heal/damage 3 champs, which is quite unique
E - nice buff for allies, though particles a bit hard to see
R - not as great as it seems ... kind of like a larger version of Janna's Q + slow, but with a massive CD, Janna's R offers more functionality (repositioning enemies, pushing them towards allies/terrains, heal), and Sona's R is a stun, which is a far better dis/engaging tool ... I guess the massive range and AOE of the tide works better in chasing enemies? Not so great in ongoing ganks/teamfights where everyone is clustered together and trading health ... not a game turning ult in ganks ... though it helps allies to get those low-health enemies that are trying to get away without flash
Actually, I think her kit leans more towards helping allies chase/run away from people, because of the MS de/buff her skills offer. So she has to pick a lane partner that can capitalize on this.
Extremely mana hungry!!
The eyes of the in-game model look a bit weird to me, perhaps too big?
Can't wait to see her lore.