While Rivalry/Gozen is active and you have a face-up monster, you cannot Summon monsters that are a different Type/Attribute from the monster(s) you already control.If there are different Types/Attributes, you choose 1 Type/Attribute to keep, and send your face-up monsters that aren’t that Type/Attribute to the Graveyard. If they all have the same Type/ Attribute, you don’t have to do anything else. When this Trap Card’s activation resolves, look at the face-up monsters you control.“ Rivalry of Warlords” and “ Gozen Match” are Continuous Trap Cards that make it so you can only control face-up monsters of 1 Type (for Rivalry) or 1 Attribute (for Gozen).
