This spell is a specialized variation of the more commonprayer known as Wall of Earth. It entreats the Earth spirits to draw an array of huge stones up from the ground, erupting in an instant through most intervening physical obstacles (such as the floor of a house) to create a circular barrier around the caster. The stones are too strong to break through with anything short of a siege engine (against a siege engine they are considered to have 500 Wounds and Reduction 15), but can be clambered over with a Complex Action and a roll of Athletics / Strength against the caster’s Earth x5.
When the spell expires, the stones crumble away to loose earth and dust.
Source
Source Book
Ring
Rank
3
Range
Centered on caster
Area of Effect
Circular barrier 15’ in radius
Duration
10 Rounds
Raises
Area of Effect (+5’ radius per two Raises)
Duration (+2 Rounds per Raise)
Special (+5 TN to climb rocks per Raise)