Burrow, Mass

(Underdark, DnD 3.5)

Transmutation

Level: ; Druid 6; Harper Scout 4; Prime Underdark Guide 4; Ranger 4; Sorcerer/Wizard 6
Components:
Target: One creature/level, no two of which can be more than 30 ft. apart

This spell functions like burrow, except that it affects multiple creatures.