Bioplasmosis: At the beginning of the round, you may move one of your GF from one planet you control to another planet in an adjacent system.

Q: What would happen if I did that on Mecatol while custodians are there? Do I remove them as distan sun counter's and clame the planet?

Doesn't it state that you have to move the GF both from and to a planet you control? Thus you would be unable to use GF to expand on their own, you would need a carrier to transport them to the next world…

I believe that the general consensus would say that Mecatol Rex is an exception to the Arborec racial tech the same way it is excepted from a lot of other events and effects.

this it is written on the card:

At the begining of the Strategy Phase, you may move 1 GF from a planet you control to a friendly or uncontrolled planet in an adjacent system.

(Discard any Domain Counters on the planet)

Winnu has a similar race-technology (Lazax Gate Folding):

At the start of the Status phase, you may place 1 Ground force on Mecatol Rex.

You may only do this if the planet is uncontrolled or is under jour control.

(Discard any Domain Counters on the planet)

In FAQ page 14 ther is explanation for lazax Gate Folding:

I'd say that they definately can take Mecatol Rex with this

-Nehkrimah

Nonimus said:

Given the similarities in wording, and the answer in the FAQs, I would say that the direction that FFG is going is that the Custodian tokens are also considered domain tokens, at least for abilities similar to the effects of those techs in question above.

True. According to RAW I can't see any hindrance for the Arborec to do it.

I suppose the fact that the Winnu racial is specifically ONLY usable for going to Mecatol Rex colored my earlier judgement.

Thanks for the opinion