The challenge I see is more in assembling it: those commons are definitely strong, but only Intrepid Rabbit actually helps the game plan of generating additional bodies, and other cards which make tokens or help you draw more creature cards are a lot harder to come by
When the last is removed, they may cast this card without paying its mana cost
Look for inconsistencies : Ensure the card looks proper, and whether everything makes sense, too (e.g
Cycles Double cycles Pairs Final Fantasy has one mirrored pair and one meld pair: Reprinted cards Dark Confidant first printed in Ravnica: City of Guilds , last seen in Foundations Jumpstart
This is with good reason, of course, because Wrenn and Six is strong especially for decks that run fetch lands
Historically, the main problem in Modern has been the lack of universal answers to keep broken decks in check