D&Dtools1

You take up the mantle of the earth, gaining power over it as long as you stand upon or beneath its surface.
While energized with the awesome power of this spell, you may choose a spell from those listed below once per round and use it as a spell-like ability.
Using a spell in this way requires a standard action, even if the spell would normally have a longer casting time (such as move earth).
The spells granted by undermaster are burrow*, earthquake,
excavate*, flesh to stone,meld into stone,move earth, reverse gravity, soften earth and stone, statue, stone shape, stone sphere*,
stone tell, stone to flesh, transmute mud to rock, transmute rock to mud, and wall of stone.
XP Cost: 1,000 XP. *New spell described in this chapter.