DCI-numbers containing letters
This is a printing error.
Wizards accidentally swapped the online activation code with the DCI number
on this run of cards. If you look at the small text of the activation code,
you'll see that it's all numbers and this is, in fact, the dci number for
that card. If you absolutely need to use one of these cards, that's how you
can do it, but I believe WPN wanted stores to not use those cards and just
order more from their WPN rep.