You have access to a host of Wizards to double damage from, including Black Waltz No
Dull them. You should have no problems dulling two to three characters, plus you can count cards that were removed from the game, so even if the card was removed out of your Break Zone by, say, Mist Dragon [9-068H], there wont be any issues
Based on all of the MTG Final Fantasy spoilers so far, it seems like Chocobo decks will be the ones to beat
If you want more towns in your deck, this isnt terrible, but not tapping for any colored mana is a big downside that youll want to avoid
It sees a solid amount of play in the G/W decks that exist along with some builds of G/R, so I dont think the price is going to fall any time soon