Cheapest priced copy (War of the Spark): $0.79 at Card Kingdom, near mint, their price list as of .
Vivien, Champion of the Wilds 
Legendary Planeswalker — Vivien · Rare · War of the Spark · #180★
You may cast creature spells as though they had flash.
+1: Until your next turn, up to one target creature gains reach and vigilance.
−2: Look at the top three cards of your library. Exile one face down and put the rest on the bottom of your library in any order. For as long as it remains exiled, you may cast it if it's a creature spell.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
7 printings · $0.79 to $37.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Legends: Battle for Baldur's Gate | 838 | Rare | $0.99 | — |
| War of the Spark Promos | 180p | Rare | $2.79 | $2.49 |
| War of the Spark Promos | 180s | Rare | — | $5.49 |
| War of the Spark Promos | 180s★ | Rare | — | $37.99 |
| Secret Lair Drop | 519 | Rare | — | $4.49 |
| War of the Spark | 180 | Rare | $0.79 | $2.49 |
| War of the Spark | 180★ | Rare | $2.49 | $37.99Out of stock |
3 rulings from Wizards of the Coast
- 3 May 2019You must follow any applicable timing permissions and restrictions if you cast the exiled card. This means that if Vivien leaves the battlefield, you can't cast the creature spell as though it had flash unless another effect allows you to do so.
- 3 May 2019Once you cast the creature card, it leaves exile. You can't cast it again if that card becomes exiled again.
- 3 May 2019While resolving Vivien's last ability, you must exile one of the three cards, even if none of them are creature cards. You may look at the exiled card at any time, even if it's not a creature card.