Cheapest priced copy (War of the Spark): $0.35 at Card Kingdom, near mint, their price list as of .
Devouring Hellion 
Creature — Hellion · 2/2 · Uncommon · War of the Spark · #124
As this creature enters, you may sacrifice any number of creatures and/or planeswalkers. If you do, it enters with twice that many +1/+1 counters on it.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| War of the Spark | 124 | Uncommon | $0.35 | $0.49 |
3 rulings from Wizards of the Coast
- 3 May 2019You choose how many and which creatures and planeswalkers to sacrifice for Devouring Hellion’s ability while it’s entering the battlefield. No player may take actions between the time you choose which permanents to sacrifice and the time Devouring Hellion is on the battlefield with those counters.
- 3 May 2019If any of the sacrificed permanents have abilities that trigger when Devouring Hellion enters the battlefield (such as that of Kronch Wrangler), those abilities won’t trigger.
- 3 May 2019If Devouring Hellion somehow enters the battlefield at the same time as another creature or planeswalker, you can’t sacrifice that creature or planeswalker. You may choose only permanents that are already on the battlefield.