Summoning Gate Room

[Summoning Gate Room : it can summon characters with a protection, if the protection is destroyed they will be unsummoned. This same goes for those who want to enter another universe/Multiverse through this summoning Gate. And through contract the summoned character can stay permanently, this room is customizable, Character summoned will depends on the user and user's power itself. The character summoned can be permanent if they have died. This is a secret room, fully enchanted, have a secret guardian.]