Summon Earth Elemental( Races of Faerûn, p. 169)
Like many experienced deep gnomes, you have developed the ability to summon earth elementals to help you with tasks.
character level 6th, Deep gnome,
Once per day, you may summon an earth elemental. If acting alone, you may only summon a Small earth elemental. For each additional deep gnome employing this feat in conjunction with you, you may summon an earth elemental one size larger (see the table on Monster Manual page 83). For example, a group of four deep gnomes with this feat can summon a Huge earth elemental, and a group of six deep gnomes can summon an elder earth elemental. Working together in this fashion uses this ability for all involved gnomes for the day. This is a spell-like ability and is treated as if the characters involved are casting a summon monster spell of the appropriate level, with the exception that they can only summon earth elementals. Unlike the spell, you cannot use this ability to summon multiple elementals at a time. Svirfneblin Figment