Surge of Righteousness
Instant
Destroy target black or red creature that's attacking or blocking. You gain 2 life.
Though she stood alone, she struck with the force of an army.
Marco Nelor
Dragons of Tarkir (DTK)
• #42Rulings
If Surge of Righteousness resolves but the creature isn’t destroyed (perhaps because it regenerated or it has indestructible), you’ll still gain 2 life.
(wotc • 2015-02-25)
However, if the creature becomes an illegal target before Surge of Righteousness resolves, it won’t resolve and none of its effects will happen. You won’t gain life.
(wotc • 2015-02-25)
Rulings
If Surge of Righteousness resolves but the creature isn’t destroyed (perhaps because it regenerated or it has indestructible), you’ll still gain 2 life.
(wotc • 2015-02-25)
However, if the creature becomes an illegal target before Surge of Righteousness resolves, it won’t resolve and none of its effects will happen. You won’t gain life.
(wotc • 2015-02-25)