Ultimate Temporal God Sephiron!

Ultimate Temporal God Sephiron
Light
Level 10
Fairy/Effect
This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except if there are 10 or more monsters in your Graveyard. Once per turn, you can Special Summon 1 level 8 or higher Fairy-Type monster from your hand or Graveyard. Its effect(s) is negated, and its ATK becomes 4000.
4000/4000



Standard Game-Ender Monster...

Pros:
-Light
-Fairy
-Instant OTK if you can attack with it and the special summoned monster

Cons:
- Cannot be reliably searched
- Summon Restriction takes a while to meet in a non dedicated deck
- Negates the monsters effect (Would be broken with Superbia...)

Light equates to a lot in YGO terms and gives it access to all Light Support and can be used as Fodder for Treasure of Heaven if unusable for the turn. It also can be used with Honest and such. The best use though is a late game Beckoning Light in a Lightsworn-style build... Summon JD drop this card win...

Fairy means more use out of Fairy specific cards like Asmodeus to put it and other fairies in the grave. Herald of Orange Light fodder is also a viable option. It can also be used in a Perfect Herald Tethys build.

The instant OTK is pretty simple but the best way to do it is in a Synchro deck. Turn 1: Drop Dandylion for One for One to summon glow-up bulb... summon two Formula Synchron... Normal Summon Debris Dragon to revive Dandylion... tune Dandylion with Formula Synchron for Hyper Librarian. Tune the tokens with Debris Dragon for Iron Chain Dragon... Tune Formula Synchron to Iron Chain Dragon for Stardust Dragon... Charge of the Light Brigade milling any two monsters to add Ryko. Set any traps you have and end... Turn 2: Summon Junk Synchron for Formula Synchron... Summon Shooting Star Dragon. Tune Junk Synchron to Hyper Librarian to summon Stardust Dragon. Special Summon Sephiron and Special Summon Metaion from your hand or graveyard... Swing with Stardust, Shooting Star Dragon, Sephiron, and Metaion for GG lol or afterwards Avarice back all the synchros...

That's all for today tomorrow I don't know what I'll type about lol.