So i 'finally' got that highly specific scenario to occur

[Imperatordavius]

In regards to the moon and how many squirrels/rabbits can fit in its orbit... turns out, the only limitation, is if you have a creature that can survive it's increasingly stronger attack each turn, which ic ould not get

However... i got the following combo...

An Elk with the Unkillable Sigil, and an Elk Totem that allowed me to produce a single rabbit in my hand each time an elk was played

This mean that every time a rabbit was spawned in my hand it had the Unkillable Sigil, meaning it would return to my hand if killed, and sure enough, the moon just kept pulling rabbit/squirrel into its orbit... it got ot the point that... there were '40+' circling it, my only regret, was not having a creature that didn't do any damage to the moon to just make the moon into Saturn

https://youtu.be/L9p7n3vCor8