Dragon-Style Twins

Card Name

Dragon-Style Twins

Mana Cost

3

Type

Creature – Human Monk

Rarity

Rare

rules Text

Double strike Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Flavor Text

"We are the flicker of the flame and its heat, the two sides of a single blade."

Legal Formats

Commander, Legacy, Modern, Pioneer, Vintage

Not Legal Formats

Alchemy, Brawl, Explorer, Historic, Pauper, Standard

Rulings

(9/20/2014)
Any spell you cast that doesn't have the type creature will cause prowess to trigger. If a spell has multiple types, and one of those types is creature (such as an artifact creature), casting it won't cause prowess to trigger. Playing a land also won't cause prowess to trigger.
(9/20/2014)
Prowess goes on the stack on top of the spell that caused it to trigger. It will resolve before that spell.
(9/20/2014)
Once it triggers, prowess isn't connected to the spell that caused it to trigger. If that spell is countered, prowess will still resolve.