Wouldn't "dies" be much simpler than "is destroyed"? I bet a lot of players wouldn't correctly guess which out of Incinerate, Final Judgment, Mutilate, Disintegrate and Cruel Edict count as causing destruction.

This is interesting, anyway. This rewards you for killing your own creatures, unlike Shriveling Rot or Dingus Staff. It's twice as effective as Boggart Shenanigans or Hissing Iguanar, though not as good as Stalking Vengeance... aha! This is the same level of damage as Rage Thrower. But that triggers off anyone's stuff dying, not just yours.

Anyway, that little search seems to show that the cost and rarity are about right.

Actually I wanted a red way to punish wraths, which is precisely why it says "destroyed": I didn't want it to fuel sacrifice outlets!

Mmm... But it doesn't punish Hallowed Burial or Final Judgment, which are treated as wraths in most ways. Avoiding fuelling sac outlets is a noble cause, though a tricky one.

yes, but nondestructive wrath are an occasional and unusual development.