I'm little confused how to assemble swarm and single Arachnid. \
On box printed - 2 Arachnid swarms. Box includes 1 Swarm card and 3 Steam Arachnids (4SS each). So do I have 2 Swarms or 1 Swarm and 3 single or I just can put them on 40mm base and have 2nd Swarm?
How to assemble them better? Do I still need Arachnids box or Big Arachnids box?
Do I need (in general) anything from Kaeris box?
What about Aionus is it good for Ramos (or Arcanists)?