Enter Imaginary Threats, which is awesome in multiplayer
Charizard ex, being a Fire type deck that's weak to Water, could see some reduced play as a result of this boost, but is otherwise largely unaffected by the Mythical Island expansion
Cow-tapult is a reference to a scene early in the film, in which French soldiers occupying a castle use a catapult to fling a cow (the flavor text is French for Fetch the cow!) and other barnyard animals at King Arthur and his knights
There will be some scenarios calling for a combat trick, but those events will be less frequent
I'm down to one right now, but I might drop to zero maindecked
Sure, you won't see Poison Dart Frog appear in many eternal formats, and even that much utility might not be enough for Modern, but in slower Magic: The Gathering formats like limited or Commander, this little guy is an easy addition