Entombing Earth is a 19th level wizard Daily power that was introduced in the 372nd edition of the Dragon (magazine).
Entombing Earth
Wizard Attack 19
A maw of moaning grave dirt appears around your foe and slams shut with echoing finality.
Ranged 10
Target: One creature
Attack: Intelligence vs. Reflex
Hit: 2d10 + Intelligence modifier necrotic damage, and the target takes ongoing 10 necrotic damage and is stunned (save ends both). Other creatures cannot gain line of sight or line of effect to the target while it is stunned.
Miss: Half damage, and the target takes ongoing 10 necrotic damage (save ends).