That is, it doesnt have too big or too small of an impact on a format
Its design was actually finished in 2014, but the schedule couldnt allow for its release until three years later
Cast a creature spell for its impending cost, and it'll enter with time counters on it, but not as a creature
Arena often rewards you with free packs whenever a new set is released as a way of introducing them to new or returning mechanics
Id mention more of the very minor complaints I had with Magic: The Gathering Arena, but I dont doubt that most of them will be altered before the game reaches beta later this year
At the end of the day, the downside to Flake Strike isnt much of a bother given how you can use one of Reshiram & Charizard GXs alternate attacks or just activate a switching card (Guzma, Switch, Escape Rope, etc.) to reset the effect and allow it to attack again