I have an abaddons egg, but I have looked at Abaddons passive abilities vs Grimm's and it seems like Grimm is the better pet to choose, I might just sell Abaddons Egg and get Grimm when he comes out near Halloween.

Thoughts whether I should sell Abaddons Egg and get Grimm in CS?

He will also be cheaper on the 1st day, so I will probably make a 200-400k profit + Grimm