The summoner class casts a one minute ritual to call forth their Eidolon. From the PFSRD:
A summoner can summon his eidolon in a ritual that takes 1 minute to perform.
Have Paizo ever stated anything official about what the ritual entails, or what the summoner can or can't do during that ritual?
Does it take full concentration? Can the summoner take 5 foot steps, move actions, anything? Concentration checks needed?
Most of the discussion forums I've read just say "GM fiat," which is fine, but I'd love to know if there was anything official.
Best Answer
While there's nothing that specifically calls out the Summoner's Eidolon ritual, I'm going to use the rules for casting time:
The rules for a full-round action state:
You must also maintain concentration for the entire duration (10 rounds for a 1 minute spell) of the casting:
So you may make a 5-foot step every round, but injury, violent motion and other dangers force concentration checks and, if you miss your roll, you must restart the ritual.