Mythical cards should be restricted as far as I know, but I cannot confirm it until we do not get an official response from the staff :/

_________________
Guild Leader of the Zil Warriors

If the translation into English is correct, the card would have a bug because it also plays mythical cards D:

_________________
Even a well-lit place can hide salvation, a map to a one-man maze that never sees the sun.
Where the lost are the heroes and the thieves are left to drown, but everyone knows by now fairy tales are not found they're written in the walls