Thunderstanding

Whenever one of your creatures is targeted by a spell or ability, you may pay {r}. If you do, Thunderstanding deals 1 point of damage to that spell or ability's controller. If your creature is a monk, Thunderstanding deals 2 points of damage instead.
"Be a part of this world but apart from its worries. Karma will have its final word as it ever has."
-Teachings of Py Gao