Dark Age of Genosha
Staff of Earthen Might
Staff, uncommon (requires attunement by a bard, cleric, druid, ranger, sorcerer, warlock, or wizard)
This staff can be wielded as a magic quarterstaff that grants a +1 bonus to attack and damage rolls made with it. While holding this staff and standing on a surface of earth or stone, you gain a +2 bonus to Athletics checks and Strength ability checks (but not Strength-based attacks).
Earth Strike: Use this power when an attack with this implement hits. The target is knocked prone and its movement speed is halved until the end of your next turn. This power cannot be used again until dawn the next day.