As you'd expect, in-app currency is far more expedient and that means there's always the niggling suspicion that anyone shelling out in the Arena store will have better decks
However, you can only play 1 support cards from your hand during your turn, as stated in every Supporter cards
They will spend so long focusing on not loosing to the Copter that you have a good chance of taking the game with whatever else you have going on or managed to setup with the Copter
Decomposition is decent, but not one of his best works, I could see hating on it, though if we are going down that road, this one is definitely his worst: I have no idea what this is supposed to be and its ugly as shit too
This may be anecdotal, but keep in mind theres a ton of Magic players around the world, and pretty much any who try to use Gatherer outside English-speaking countries will run into issues like this