Cheapest priced copy (Dominaria Remastered): $0.35 at Card Kingdom, near mint, their price list as of .
Mystic Enforcer 
Creature — Human Nomad Mystic · 3/3 · Rare · Odyssey · #290
Protection from black
Threshold — As long as there are seven or more cards in your graveyard, this creature gets +3/+3 and has flying.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
4 printings · $0.35 to $37.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Dominaria Remastered | 192 | Uncommon | $0.35 | $0.49 |
| Dominaria Remastered | 360 | Uncommon | $0.35 | $0.49 |
| Odyssey | 290 | Rare | $2.49 | $37.99 |
| Time Spiral Timeshifted | 96 | Special | $0.49 | $3.99 |
One ruling from Wizards of the Coast
- 8 December 2022Because damage remains marked on a creature until the damage is removed as the turn ends, nonlethal damage dealt to Mystic Enforcer may become lethal if the number of cards in your graveyard falls below seven.