Culvert Ambusher 
Creature — Wurm Horror
When this creature enters 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.)
Legality
standardLEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL