Knight of the Mists
37924cbc-fb9d-4906-9ad2-9b6d4ccfff0f
$0.25 CND
Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.)
When Knight of the Mists enters the battlefield, you may pay {U}. If you don't, destroy target Knight and it can't be regenerated.