Momentum Breaker

Seems like a no brainer of a spec to me. Looks really good for any deck playing black in EDH when black already likes playing [[Plaguecrafter]] and this is cheaper and breaks parity. Not to mention there's upside against opponents that don't have a creature or vehicle. Also benefits as an early play to get Speed started if any other speed cards become good.

Also looks like something Esper Selfbounce in standard could use and it also triggers a lot of Duskmourne cards since it's an enchantment.

Any thoughts on the spec?