Its a menace body to help get Isshin triggers, and it generates plenty of value
Effects that last "until end of turn" or apply "this turn" expire during the cleanup step of the player who was the active player when that effect began to apply
Sadly, I don't see any way of nerfing this deck without killing it off entirely
This is an android, and iOS native app, it has settings to auto add cards that are scanned, and make sounds, tally costs, etc
To take advantage of its need to see your opponents bleed, running other Bloodthirst-y cards, like Petrified Wood-KinPetrified Wood-Kin, Furyborn HellkiteFuryborn Hellkite, or some spectacle cards like Light Up the StageLight Up the Stage, add some good support
Having Llanowar Wastes in the format means that colored mana is as good for aggressive decks as it was last summer, back when my G/R Aggro deck from the World Championships took the format by storm