Cheapest priced copy (War of the Spark): $0.69 at Card Kingdom, near mint, their price list as of .
Ob Nixilis, the Hate-Twisted 
Legendary Planeswalker — Nixilis · Uncommon · War of the Spark · #100
Whenever an opponent draws a card, Ob Nixilis deals 1 damage to that player.
−2: Destroy target creature. Its controller draws two cards.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
6 printings · $0.69 to $12.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Jumpstart 2022 | 450 | Uncommon | $0.99 | — |
| War of the Spark Promos | 100s | Uncommon | — | $2.79Out of stock |
| War of the Spark Promos | 100s★ | Uncommon | — | $12.99 |
| Secret Lair Drop | 511 | Uncommon | — | $4.99 |
| War of the Spark | 100 | Uncommon | $0.69 | $2.99 |
| War of the Spark | 100★ | Uncommon | $1.29 | $5.99Out of stock |
2 rulings from Wizards of the Coast
- 3 May 2019If the target creature is an illegal target by the time Ob Nixilis's last ability tries to resolve, the ability doesn't resolve. No player draws two cards. If the target is legal but not destroyed (most likely because it has indestructible), its controller does draw two cards.
- 3 May 2019If Ob Nixilis leaves the battlefield before his last ability resolves, most likely because he only had 2 loyalty when you activated the ability, his first ability won't exist to trigger when the creature's controller draws two cards.