Recent game of duels. My opponent had the passive that gives you two secrets to start the game.
Turn 3 i play armor smith to test the secrets. Snipe went off and did the 4 damage to the armor smith, thus killing it. To my surprise, the explosive runes then triggered on the now dead armor smith with zero health, and did the full 6 damage to my hero.
I had never seen this interaction before and I guess I assumed if snipe killed a minion, explosive couldn’t trigger.