Quicksand (Rank 4) Edit
The Garou turns the ground into a sticky morass that catches foes and prevents them from escaping or even walking. An earth elemental teaches this Gift.
The player spends a Gnosis point and rolls Manipulation + Primal-Urge (difficulty 7). Each success changes the ground into a quicksand-like bog for a 10-foot radius. Anyone trying to move through it (except the Garou) moves at half walking speed, and he may not execute combat maneuvers that require overland movement. Additionally, all other combat maneuvers take a +1 difficulty penalty.
Source: 3rd ed WWtA Corebook