Cheapest priced copy (Ikoria: Lair of Behemoths): $0.35 at Card Kingdom, near mint, their price list as of .
Blitz Leech 
Creature — Leech · 5/2 · Common · Ikoria: Lair of Behemoths · #74
Flash
When this creature enters, target creature an opponent controls gets -2/-2 until end of turn. Remove all counters from that creature.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ikoria: Lair of Behemoths | 74 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 17 April 2020Blitz Leech’s ability removes all counters from the target creature before state-based actions are checked to see if that creature should die. For example, a 2/2 creature with a flying counter on it will lose that counter while it’s a 0/0 creature before it dies.