The notable ones are Summon Elementite Swarm as a 4th-level spell, and Summon Greater Elemental as a 6th-level spell, both of which are bolstered by Rashemi Elemental Summoning. Binding Winds, a 2nd-level spell, has potential as a useful spell.
EDIT: Given my strong Summon Nature's Ally spells up to this point, I think I'll hold off on using Summon Greater Elemental. Summon Elementite Swarm, however, is a nice upgrade to Summon Swarm and will be used pretty much regardless of whether or not I can concentrate on it.
The build will be...
Race: Human (Rashemi)
Abilities: Str 14, Dex 15, Con 16, Int 15, Wis 17, Cha 20
Levels: Spirit Shaman 5/Divine Oracle 1/Runecaster 1
Feats: Spell Focus (Conjuration), Augment Summoning, Greenbound Summoning, Spontaneous Summoner, Knowledge Devotion, Inscribe Rune
Items: Frog God's Fane Benefit, Belt of Hidden Pouches, +1 Buckler, +1 Chain Shirt, Lesser Crystal of Arrow Deflection, Periapt of Wisdom +2, Wand of Lesser Vigor, Anklet of Translocation, Masterwork Calligraphy Kit, 885 gp of runes
As for what runes I will have use of, that I need help with. Obviously, I have full access to all Druid spells and the Oracle domain, so I can justify having runes from those spell lists.