Without the ability to make them in your MA, the only places are visit chests and the tourney. The tourney is even tough on getting them as they are only available in rounds 5 & 6 as individual rewards. They are also in the FS chests rewards, including the first chest. Those will drop all at once, so you'll only be able to get credit for one of them even if you get more than the first FS chest. Make sure everybody in the tourney has the spell part of that badge cleared before the tourney ends (as in make sure they've gotten the planks to go with any MM's they got in their last tourney round and claimed that badge) and each one of you will get one MM when the tourney rewards drop! That should help, since it's unlikely you'll get to round 5 in next week's tourney before the FA ends.