black-green midrange for arenathis is optimized for mtg arena constructed event best of one. this deck is my number one most winning deck and has been a blast to play. it run into trouble vs blue/red/white control, and the blue/white mill control that currently in the meta. everything else is fair game.
detection tower is a nice way to get around hexproof also and suggest running in every deck you play with for the current meta.
please check out my youtube(
https://www.youtube.com/channel/UCXusF1xBtRpfPTExghua2Yg?view_as=subscriber ) for more on this deck, and many other decks that I currently work on.