Simulated holo effect, for illustration only.
Cosmo Brain
- Expansion
- Cybernetic Horizon
- Code
- CYHO-EN020
- Rarity
- Common
- Card type
- Monster · Spellcaster/Effect
- Attribute
- DARK
- Level
- 7
- ATK / DEF
- 1500 / 2450
Card text
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.
Other printings
Price history
Ungraded cards
Condition: Near Mint (Mint and Near Mint)
- From
- —
- Price trend
- €0.04
- Average price 30 days
- €0.11
- Average price 7 days
- €0.08
- Average price 1 day
- €0.03
Oct 2, 2026 · €0.04
The dashed line is an estimate from the markets' rolling averages; recorded history starts on Oct 1, 2026.
Show data as a table
| Date | Price | Low |
|---|---|---|
| Oct 2, 2026 | €0.04 | — |
| Oct 1, 2026 | €0.05 | — |
| Sep 24, 2026 (estimate) | €0.08 | — |
Graded index
Certified cards, by grader and grade — kept apart from ungraded prices.
No graded prices
There aren't enough reliable offers for this graded card on external markets.