User blog comment:Commander Marko/Razor, The Hextech Sharpshooter/@comment-173.64.116.103-20130206213352/@comment-76.103.140.128-20130207004013

^that's an interesting point, to prevent stacking of the mines. Maybe if all mines blew up each other if in a very close AoE, but opponents are only damaged by one instance of the mines, that way people can't stack them for 30% of their hp gone!