Prowess

Prowess
Keyword Ability
Type	Triggered
Introduced	Khans of Tarkir
Last used	Evergreen
Reminder Text	Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Storm Scale	1
Statistics	27 cards 55.6% 22.2% 18.5% 3.7%
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keyword:"Prowess"

Prowess is a keyword ability that was introduced as the clan-specific mechanic for the Jeskai Way in Khans of Tarkir and Fate Reforged. R&D's need for blue to get a combat-relevant keyword that wasn't about evasion caused Prowess to become evergreen in Magic Origins.

Description

Prowess was designed by Jonathon Loucks during the second Great Designer Search. . Creatures with the Prowess trigger get +1/+1 until end of turn when a non-creature spell is cast by their controller.

Prowess is secondary in red and tertiary in white, though no white card has been printed with prowess since it inception. Mark Rosewater has admitted that Prowess has more design issues than the average evergreen mechanic.

Rulings

• 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.
• Prowess triggers only once for any spell, even if that spell has multiple types.
• Prowess goes on the stack on top of the spell that caused it to trigger. It will resolve before that spell.
• Once it triggers, prowess isn't connected to the spell that caused it to trigger. If that spell is countered, prowess will still resolve.