Destroying Andro Sphinx and Sphinx Teleia at the same time is easy . . . if you have Time Wizard.

Actually, Number 1 is incredibly easy to summon. Use Dark Hole to destroy all monsters on the field, then activate and summon.

Winning a 50/50 coin toss makes you super lucky? Half of the world should be going to Vegas then

I think Gate Guardian should have been on this list because all of his 3 monsters need to be on the field to summon him not hand or deck so you gotta draw them too then summon. And all 3 monsters need 2 tributes to be summoned onto to the field.

Gate Guardian

exodia necross? you need every part of exodia in grave, him and also the spell. Even if you only used one card to send all the pieces to the grave, that's 8 cards you need to summon him.

Number 1 should be "The Sorcerer of Existential Chaos" This card doesn't even exist so you can imagine that it's pretty fucking hard to summon it.

the gate guardian, to get all three level seven on the field at the same time and somehow have gateguardian in your hand to tribute the three, is pretty difficult, pretty useless aswell.

I feel like Theinen isn't as hard to summon as some of the others on this list, especially considering it can be special summoned from the deck and with Pyramid of Light it becomes much easier to summon both of the sphinx's and destroy them both at the same time. I'm not saying that those summoning conditions aren't very ridiculous, just that I don't think it's deserving of number 1.

perfectly ultimate great moth! thats one of the most powrful cards in all of deul monsters!

Heres something special^^

my friend had both sphinxes on the field,used dark hole,then had thenien w/megamorph for a direct attack

Theinen isn't that hard to summon. You can use that pyramid of light card that came from the same movie promo to summon the 2 sphinxes, and then pop it with an MST, which causes the sphinxes to die at the same time.

I don't know how you could forget Machina Force ,Super crash bug, Neos wise man and Flying Fortresses SKY FIRE.

Dragon Master Night and The Creator God of Light I think are 2 honorable mentions

Can we have an update on this list?

How is nobody mentioning Horakty?! It's easily the hardest card to summon!

What about Kuriboh the forbidden God card?

I was able to summon shooting star dragon, number 39 utopia, rune eyes pendulum dragon in one turn so I'd just need to come up with a way to include ritual.