Rust Scarab - mtg.wtf

Creature - Insect

Whenever Rust Scarab becomes blocked, you may destroy target artifact or enchantment defending player controls.

"Behold nature's answer to the problem of society."
—Nikya of the Old Ways

4/5

2013-01-24 Rust Scarab's ability normally triggers only once per combat, no matter how many creatures are assigned to block it.
2013-01-24 The artifact or enchantment will be destroyed before combat damage is dealt but after blockers are chosen.

Card is in preconstructed decks:

mtg.wtf