![Wizened Arbiter [Mystery Booster Playtest Cards]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/wizened-arbiter-mystery-booster-playtest-cards.webp)
Description
| Set: | Mystery Booster Playtest Cards |
| Type: | Creature — Human Soldier Wizard |
| Rarity: | Rare |
| Cost: | {W}{W} |
When Wizened Arbiter enters the battlefield, you may reveal a white card you own from outside the game. If you do, exchange that card with a card in your hand.
![Mammoth Umbra [Planechase Anthology]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/mammoth-umbra-planechase-anthology.webp)
![Forgotten Creation [Shadows over Innistrad Prerelease Promos]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/forgotten-creation-shadows-over-innistrad-prerelease-promos.webp)
![Nissa, Vastwood Seer // Nissa, Sage Animist [Magic Origins Prerelease Promos]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/nissa-vastwood-seer-nissa-sage-animist-magic-origins-prerelease-promos.webp)
![Progenitus [From the Vault: Legends]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/progenitus-from-vault-legends.webp)
![Zodiac Monkey [Portal Three Kingdoms]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/zodiac-monkey-portal-three-kingdoms.webp)
![Vivid Creek [Modern Masters]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/vivid-creek-modern-masters.webp)
![Sway of the Stars [Betrayers of Kamigawa]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/sway-stars-betrayers-kamigawa.webp)
![Call of the Wild [Classic Sixth Edition]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/call-wild-classic-sixth-edition.webp)