Cosmo Brain

This page notes details of Cosmo Brain (DARK/Spellcaster/Effect Monster) : decks, tips, effect and rulings. Learn and enjoy playing Yu-Gi-Oh! Duel Links!
update 14/03/2020

Cosmo Brain

Cosmo Brain
TypeSpellcaster, Effect


Cannot be Normal Summoned/Set. Must first be Special Summoned by sending 1 non-Effect Monster from your hand or face-up field to the GY. This card gains ATK equal to the Level of the monster sent to the GY this way x 200. You can Tribute 1 Effect Monster; Special Summon 1 Normal Monster from your hand or Deck. You can only use this effect of "Cosmo Brain" once per turn.

How to Get

PackThe White Dragon of Legend [R]
Sword of Paladin [R]
Selection Box Vol.05 [R]
Level-up reward--
Victory against--
Card trader--




Blue-Eyes Cosmo Brain Deck

Dark Magician Cosmo Brain Deck


Hot New Top
Not KoG
Cosmo Brain got good after No. 11.
Not KoG
Yes. I got 3 Cosmo Brains.F2P!

Still DKayed's got lucky his Cosmo Brain F2P deck is now a reality.
Not KoG
Bronze tournament winner.
Not KoG
Cosmo Brain is now F2P baby! You can now get legit 3 for FREE!
this card is bugged since the last update, cannot be special summoned on your first turn. i reported the bug but lets wait for weeks until the fix
<< Anonymous
Anonymous Reply
"This card gains ATK equal to the Level of the monster sent to the GY this way x 200"

Yep, the level in the GY counts. The level it had on the field doesn't matter at all.
<< Anonymous
Anonymous Reply
The text which reigns supreme says it's 200x the card that "send to GY" not the card that is "in the GY".
<< Anonymous
Anonymous Reply
Here's what happens in order:

1) You summon Cosmo by its own effect by sending a monster to the GY.

2) Cosmo's 2nd effect activates. It checks the monster's levels that is now in the GY. In this step, you don't care anymore what level it had in step 1) because this step is a different effect.
<< Anonymous
Anonymous Reply
FYI: That's also the reason why you can use Embodiment of Apophis for 1) but you don't gain ATK because in 2) it is a trap and not a monster. That is the official ruling of this card:
worth SR
Cant activate its effect on my first turn. Anyone else facing this?
<< Anonymous
Anonymous Reply
It's because you're too dumb to read your skills
<< Anonymous
Anonymous Reply
literally not even just A trick up sleeve it is just in general and also doesn’t let scrap recycler trigger
<< Anonymous
Anonymous Reply
Read your skills and read your other cards.
<< Anonymous
Anonymous Reply
A trick up their sleeves... you sound like someone who got their butt handed to them a lot. It's because of baby players like you that konami had to limit everyone else lol.
Any way to search for this card if i dont start with it my first turn? Like fossil dig does for dinos
<< Anonymous
Anonymous Reply
If we this card waw in anime , who would have it ? Yugi or Kaiba ?
<< Anonymous
Anonymous Reply
Kozaburo, Kaiba's father, used Cosmo Queen in anime. In that case, there is a strong relation of Cosmo Brain with Kaiba.
<< Anonymous(Ms)
Anonymous Reply
belongs to heishin
<< Anonymous
Anonymous Reply
You are man of culture as well. Good old forbidden memories game.
<< Anonymous(Ms)
Anonymous Reply
They have Monster Reborn, Poly and other generic cards so why not this for both? also sage is spell caster so...
Do we have an R dream ticket too ? I want another one of these
<< Anonymous(Paladin)
Anonymous Reply
There's no rare dream ticket as far as I know. There might be one in the future, though, considering how popular certain cards like this, AG Wyvern, and AG Frame can be since a lot of people don't like paying for exclusive cards
<< Anonymous
Anonymous Reply
There won't be any because it would lower their profits.

Why would a company spend resources on a feature that will lower sales?

It's all about money.
this card is 🔥in broken. such an easy cheap way to win just like treachearous and neos fusion. i go to pvp and lose 3 times in a row because all them 🔥s summon this card on their first card. make this limited to 1 and nerf this overpowered deck
<< Anonymous
Anonymous Reply
<< Anonymous
Anonymous Reply
Yup. Most guy I fought drawn this card together with Blue Eyes White Dragon on the first turn. By throwing Blue Eyes to the graveyard, this card come out on the field with unsurpassed ATK.
<< Anonymous
Anonymous Reply
well it technically is limited to only 1 deck and only people who pay get its copies
Wow probably the best current card in the whole game.
<< Anonymous
Anonymous Reply
hum.. no
i defeat a blue eyes deck of that easily idk why are you guys talking so much about it just use a re trained celt guard
<< Anonymous
Anonymous Reply
oh yeah cuz everyone has celt in their deck...hey guys i beat mask heroes easily just have 3 cipher soldiers and 3 spike shields ez
<< Anonymous
Anonymous Reply
part of the problem

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I know someone still plays this deck, well here is my lst build, youll experience the best versio...
I can't tell if this card is supposed to be the younger version of insect queen or is the da...
Go to duel links meta and find therealsuperminecraftkid's comments. They're hilarious! XD
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