yeah I'm not arguing against it being broken. The cumulative energy cost thing probably should apply to Dig. I'm just surprised no one had done that before :/
Alright, Diglett is going out next. He will be using Arena Trap.
First use Dig (but not the really stupidly overpowered kind, the normal surface on the same turn kind). Then hit him with with a Bulldozer. If he is still standing after that, use another Dig.