Fiendish Commander Yameruler - Gakuto's Ace

[Atypical-Abbie]

RD/KP01-JP029 魔将ヤメルーラ Mashou Yameruler / Fiendish Commander Yameruler
Level 8 DARK Warrior Effect Monster
ATK 2500
DEF 2500
Requirement: If this card was Normal Summoned this turn, you can activate this effect by changing this card’s battle position (from face-up Attack Position to face-up Defense Position, or from face-up Defense Position to face-up Attack Position.)
Effect: Until your opponent’s next End Phase, neither player can Tribute Summon Level 7 or higher monsters while this card is face-up.

This is apparently Gakuto Sogetsu's ace monster, who is the rival I suppose, which seems pretty clear with the "no Level 7s you silly protagonist" thing going on here.

[vla1ne]

So it's basically a crimson blader/ophion-ish effect, but arguably worse at almost every level... I like it!

[Sleepy]

So he's gonna block Seven Roads Magician's Tribute Summon, so the main character will go for the Magician Girl's effect to Special Summon it from hand and still perform the boost to take down this card.