Is there a way to get your summons to stay longer. I thought about combining Preservationist/Alchemist with the Planar Preservationist feat to get Summon Monsters as well as the Summon Nature Allies. Would that Summoner's Extended duration function on all Summon spells or just the ones uses by his ability. I thought about doing a Multi-Class of Master Summoner (Arhetype Summoner) with the Preservationist/Alchemist. Would that be unwise or not. I m working on a weak character that always uses his summons as body guards so to speak. I would like to see him have the ability to have a summon stay out longer much like the Summoner's eidolon. I would gladly give up the Eidolon for the ability to Summon a creature/Monster that stays like the Eidolon instead.
This is something that you would have to negotiate with your GM. He might allow something like Spell Specialization feat for your summon monster ability giving +2 bonus to CL and thus two additional minutes to its duration.
I would strongly advise against multiclassing summoner as it would quickly weaken summon monster as its level would be much below yours.
I just have to ask as to why you aren't using the Eidolon as a bodyguard at this point. It's really good at doing that, as a summoner bonuses come into play eventually for it being close by and it's easy to make it far more capable then anything that you can get with Summon Monster of the levels you can cast, and its not hard to make it both look and act like anything on that list of creatures for the most part. It's a summoned monster that's around all the time so I'm just really curious about why you don't want to use it?
Summoner and Alchemist don't really mesh together in any good fashion for a multiclass, they require different casting attributes and summoning focus does not function with lost caster levels.
The longer duration summons applies only to your summons from the SU ability of the summoner. the Alchemist stuff would not affect your Summoner summons at all (if that was the intent)
Really you need to use the Metamagic feat (extend?) to double the duration of your summons. But beyond the Summoner ability you wont ever get them lasting more than rounds per level.
The Eidolon suffers from:
The eidolon’s physical appearance is up to the summoner,
but it always appears as some sort of fantastical creature.
This control is not fine enough to make the eidolon
appear like a specific creature. The eidolon also bears a
glowing rune that is identical to a rune that appears on the
summoner’s forehead as long as the eidolon is summoned.
The whole class is build around the Eidolon. I was thinking something like a True summoner.
Preservationist/Alchemist with the Planar Preservationist feat fits into the a concept of a character whom studies Monsters and creatures and then uses his studies to help protect him in battle. He strives to understand monsters and creatures.
Having a summon monster spell be perm is a 20th level conjuration school ability so I dont think it would be appropriate for a low level character.
Meta-magic extend rod with the conjuration school would make you summons last 2 and a half rounds per level. For instance at level 4 you could have a small earth elemental for 10 rounds.
Other then that there is really only the summoner class that makes them last mins per level.
Has anyone heard of a way to expand the list of Summons? I had thought of a character that carries a book that needs to witness the creature in question and then depending on the CR he could add it to his book of summonible creatures. With them constantly adding new monsters and animals it just makes since the list would increase with new summons.