This spell calls on the Earth in the target's body to weigh him down, impeding his movements. The target suffers a -2k0 penalty to all rolls using the Agility trait, and his Water Ring is considered 1 Rank lower for the purposes of how far he can move.
Source
Source Book
Ring
Rank
1
Range
50'
Area of Effect
One target
Duration
6 rounds
Raises
Duration (+2 rounds)
Range (+10')
Targets (+1
to a maximum of 4 total targets)