[LV1][LV2] (During Each Main Phase) Spirits cannot be Summoned through the special effects of any Spirit, Nexus, or Spell Card.
[LV2] (During Opponent's Attack Phase) If an opposing Spirit that has not Braved attacks, your opponent must send a Core from his/her Reserve to his/her Trash, or else the attack is nullified.
There is a landbased contest where grueling battles do not occur, the only tournament of its kind; these are the grounds where such a unique competition is held. Even though none of the participants engage each other in combat, this stadium is famous for having fights break out among the audience. -from the Places of Interest 219/1000 of "Record of the Strange World" by Wanderer Lolo"-