I've been given liscence to create varients of the normal Monster Summoning lists to tailor them a little more since the character I am playing is a summoner. Since there is little else he can do beside summon, I was hoping I could get some ideas of creatures from you that would be a boon to add to my Monster Summoning I-III list. Feel free to think outside of the box. In particular, I am looking for creatures that will be of assistance to my party as supplemental warriors, healers, or magical support (i.e spell like abilities).
Other creatures that you think of that would be useful (and why) would be wonderful. The only restriction I am needing to follow at this point are creatures in the Summon Monster I to III range.