Cheapest priced copy (Commander Legends: Battle for Baldur's Gate): $0.99 at Card Kingdom, near mint, their price list as of .
Elder Brain 
Creature — Horror · 6/6 · Rare · Commander Legends: Battle for Baldur's Gate · #573
Menace
Whenever this creature attacks a player, exile all cards from that player's hand, then they draw that many cards. You may play lands and cast spells from among the exiled cards for as long as they remain exiled. If you cast a spell this way, you may spend mana as though it were mana of any color to cast it.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
4 printings · $0.99 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Legends: Battle for Baldur's Gate | 125 | Rare | $0.99 | $1.49 |
| Commander Legends: Battle for Baldur's Gate | 573 | Rare | $1.29 | $0.99 |
| Commander Legends: Battle for Baldur's Gate | 936 | Rare | — | $0.99 |
| Battle for Baldur's Gate Promos | 125s | Rare | — | $1.99 |
One ruling from Wizards of the Coast
- 10 June 2022The cards are exiled face up.