Develop Your Brain
Develop Your Brain — 1-cost Sapphire Common action More from The First Chapter (2023).
Cost
1
Look at the top 2 cards of your deck. Put one into your hand and the other on the bottom of the deck.
“Knowledge, wisdom—there's the real power!” —Merlin
Story · The Sword in the Stone
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TCGPlayer
US marketplace · Live prices
$0.11
Open →CardMarket
EU marketplace · Live prices
Foil €0.42
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Prices updated 2026-04-14
How much is Develop Your Brain worth?
As of 2026-04-14, Develop Your Brain (The First Chapter #161) sells for about $0.11 on TCGplayer (market price). On Cardmarket the 7-day average is €0.06 (30-day: €0.06).
| Marketplace | Finish | Low | Mid / 7-day avg | Market / Trend | High / 30-day avg |
|---|---|---|---|---|---|
| TCGplayer | Normal | $0.01 | $0.20 | $0.11 | $100.00 |
| Cardmarket | Normal | €0.02 | €0.06 | €0.05 | €0.06 |
| Cardmarket | Foil | €0.09 | €0.35 | €0.49 | €0.44 |
Art by Pao Yong
About this card
Develop Your Brain — 1-cost Sapphire Common action More from The First Chapter (2023). Inkable. Set: The First Chapter (1, 241 cards). Story: The Sword in the Stone. Art by Pao Yong.
