I would be interested in seeing how this plays when it does not cost you a land drop. Part of the thing with Rishadan Port is that it basically costs 2 mana to use its ability. This just costs you a 1-drop. On the other hand, it is a million times easier to kill and it has summoning sickness. I would say it needs to be tested, but if it's broken you could solve it by making it cost

or something. I think it's fine to move to the development stage as-is.