Cheapest priced copy (March of the Machine): $0.35 at Card Kingdom, near mint, their price list as of .
Karsus Depthguard 
Creature — Lizard Warrior · 4/3 · Common · March of the Machine · #150
Defender
As long as this creature's power is 5 or greater, it can attack as though it didn't have defender.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| March of the Machine | 150 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 14 April 2023Once Karsus Depthguard has legally attacked, causing its last ability to not apply by reducing its power to 4 or less won’t cause it to stop attacking.