Cheapest priced copy (Magic 2013): $0.49 at Card Kingdom, near mint, their price list as of .
Battle of Wits 
Enchantment · Rare · Magic 2013 · #44
At the beginning of your upkeep, if you have 200 or more cards in your library, you win the game.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
6 printings · $0.49 to $79.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ninth Edition | 65 | Rare | $0.59 | — |
| Ninth Edition | 65★ | Rare | — | $37.99Out of stock |
| Magic 2013 | 44 | Rare | $0.49 | $4.99 |
| Odyssey | 69 | Rare | $2.49 | $79.99 |
| The List | M13-44 | Rare | $1.29 | — |
| Secret Lair Drop | 1446 | Rare | $18.99 | $24.99 |
2 rulings from Wizards of the Coast
- 1 July 2012Battle of Wits has an “intervening ‘if’ clause.” This means that if you don’t have 200 or more cards in your library at the beginning of your upkeep, the ability won’t trigger. If the ability does trigger, but you have fewer than 200 cards in your library when the ability resolves, the ability will do nothing.
- 1 July 2012In tournaments, you must be able to shuffle your entire deck within a reasonable amount of time.