Note that if you really want to get hold of Ariel, Sonic Warrior for your deck, the standard, Ultra Rare card is selling for just $3 , so you dont have to break the bank unless you really must have the more spectacular version of the card
Yes, sure, it can go into any green deck and start putting counters on things, but to get the real synergies with this going, you need to be in a dedicated +1/+1 Counters deck
Remember, those rules state you have to challenge, it doesn't specify what you're challenging
But theres a risk that comes with questing
When everything goes right, playing this deck can be a tonne of fun but its unreliable at best and the worst performing of the Set 1 Starter Decks