Duel Links. When the opponent plays meta and has no idea what your jank Exodia deck does.

Deck list (since people keep asking)

Skill: Grandpas cards.
1 silent magician lvl 8
3 silent magician
3 the legendary exodia incarnate
3 berry magician girl
1 chocolate magician girl
1 apple magician girl
1 lemon magician girl
3 blue dragon summoner
2 legion fiend jester
1 future fusion
1 magicalized fusion

2 quintet magician

I imagine if I were that opponent, I'd be viably confused why my shiranui deck lost to a special summoned exodia and his fusion friend.

What happens in the duel:

Turn 1.
Activate Future Fusion (it doesn't do anything yet)
Set Blue Dragon summoner in defence mode and end my turn.

Turn 2.
Opponent summons Shiranui Samurai in attack position.
Sets a face down spell or trap
Attacks with Shiranui Samurai, destroying Blue Dragon Summoner
Blue Dragon Summoner activates allowing me to search a normal monster from my deck to my hand. I choose not to activate the effect.

Turn 3.
Future Fusion activates. I target a Fusion monster in my Extra Deck, then I send the materials for that monster from my deck to the Graveyard.
I choose Quintet Magician who is made of any 5 spell casters. I send four pieces of exodia from my deck to the Graveyard and one Blue Dragon Summoner.

I then set my Left Arm of the Forbidden One from my hand.
The Legendary Exodia Incarnate tributes Left Arm to be summoned. Exodia Incarnate can only be summoned by sacrificing any piece of Exodia on the field. He gains 1000 attack for each piece of Exodia in the Graveyard, which is now all five pieces, thanks to Future Fusion. Giving him 5000 attack.

Exodia attacks the Shiranui Samurai dealing 3200 damage.
I end my turn and Exodia Incarnate forces me to add any piece of Exodia from my Graveyard to my hand, I choose the head of Exodia the Forbidden One.

Turn 4.
My opponent sets a monster in defence mode and sets another spell or trap card before ending their turn.

Turn 5 (last turn)
Future Fusion activates, allowing me to Fusion Summon the monster I targeted on my last standby phase, which is Quintet Magician.
Quintet Magician's skill, is when he is fusion summoned using five different spell casters (4 different pieces of exodia and a blue dragon summoner) you can choose to destroy all monsters, spells and traps on the opponents side of the field, which I do.
I then summon Exodia the Forbidden One from my hand in attack position and declare an attack with any one of them to deal the remaining 800 life points and win the game.

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