Cheapest priced copy (Jumpstart 2022): $0.35 at Card Kingdom, near mint, their price list as of .
Goblin Psychopath 
Creature — Goblin Mutant · 5/5 · Uncommon · Scourge · #95
Whenever this creature attacks or blocks, flip a coin. If you lose the flip, the next time it would deal combat damage this turn, it deals that damage to you instead.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.35 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Jumpstart 2022 | 544 | Uncommon | $0.35 | — |
| Scourge | 95 | Uncommon | $0.35 | $0.99 |
One ruling from Wizards of the Coast
- 4 October 2004The ability triggers when it attacks or block and resolves before combat damage is assigned. This gives you a chance to possibly get rid of it before it hurts you.