Master Spirit Tech Force - Pendulum Ruler
Machine / Fusion / Pendulum / Effect
LIGHT / 
12 / 
1Pendulum Effect: You can return this card to the Extra Deck.
Monster Effect: (ANIME) Cannot be destroyed by card effects. Monsters your opponent controls with a Level lower than or equal to this card's, and monsters your opponent controls other than Pendulum Monsters, cannot attack, also their effects are negated. Once per turn: You can target 1 "Spirit Gem" monster that was Pendulum Summoned from the hand and whose monster effect was not used; Tribute that monster, and if you do, you can use the targeted monster's effects up to twice. Double any effect damage inflicted by this effect. Once per turn: You can place this card in your Pendulum Zone.
3500/3000
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This card is an upgraded version of Spirit Tech Force - Pendulum Governor.
This is the first Fusion Pendulum Monster revealed.
It is also the first Extra Deck Pendulum Monster to be used by someone other than Yuya Sakaki in the anime. In this case, Leo Akaba.
In the anime, this is the first Fusion Monster to be Fusion Summoned with only one material.
This card has the second highest ATK of all Pendulum Monsters, with the first one being Supreme King Z-ARC.
This is the first Fusion Pendulum Monster revealed.
It is also the first Extra Deck Pendulum Monster to be used by someone other than Yuya Sakaki in the anime. In this case, Leo Akaba.
In the anime, this is the first Fusion Monster to be Fusion Summoned with only one material.
This card has the second highest ATK of all Pendulum Monsters, with the first one being Supreme King Z-ARC.