Arkz: Setting cards: Limits?

[GX-Shoe]

Hi...great site. Lots of good info here.

Quick question: I've been playing for a while and can't figure out why sometimes I can set monster cards, and sometimes I can't, even when I have enough attack points to call one in.

Is it a physical # of monsters on the field? I thought I couldn't call more than 3, but sometimes when I have only 2, it won't let me call any new ones in.

Is it a total AP or HP score on the field?

Thanks for any help.

[Arislan]

Max of 7 Cards on field by a given user (used to think 6, but I proved myself wrong on that one), with a maximum set cost of 8. This applies to Hunters and Arkz.

IE: Mag x2, Daggerx2,shield would take up all 8 points, can't set more.
Or: Hildebear, Rag Rappy, Hidoom, Migium takes 8 points, can't set more.

[GX-Shoe]

Thanks! That makes sense now.