Beware the Brothers Paradox! (Skill)

Apply the following Skills:
● You can Normal Summon Level 7 monsters for 1 less Tribute.
● You can Tribute Summon 1 Level 7 monster face-up, in addition to your Normal Summon/Set.
● Your opponent takes no effect damage.
● You can only attack with 1 monster each turn, but that monster can make a second attack on monsters during each Battle Phase.