If Oceanus is OP then arsenic is OP.
They mirror each other near perfectly.
Not to mention there are a ton of far more efficient healing methods.
Shards
Sancs
Emp Bonds
etc.
I worked hard on that card to make it damn near perfect and the community reflected my feelings.
1(stacking) hp per turn is very little.
Now if you can give a detailed breakdown of why and how it is OP. Then I may be convinced otherwise. But as for now: No.
--edit: no I have no idea why I replied to what was basically a dead thread... weird day.