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, you may pay . If you don't, destroy target Knight and it can't be regenerated.
Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)Blue creatures can't block creatures you control.Nonblue creatures can't block creatures you control unless their controller pays 1 life for each blocking creature they control.
You may cast Mystic Veil as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step.Enchant creatureEnchanted creature has shroud. (It can't be the target of spells or abilities.)
You may cast Spider Climb as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step.Enchant creatureEnchanted creature gets +0/+3 and has reach. (It can block creatures with flying.)