Culvert Ambusher
Creature — Wurm Horror
When Culvert Ambusher enters the battlefield or is turned face up, target creature blocks this turn if able.
Disguise 
(You may cast this card face down for as a 2/2 creature with ward 
. Turn it face up any time for its disguise cost.)
The bite at the end of the tunnel.
4/5
イラスト：
Murders at Karlov Manor#158アンコモン英語