Cheapest priced copy (The Lost Caverns of Ixalan): $0.35 at Card Kingdom, near mint, their price list as of .
Itzquinth, Firstborn of Gishath 
Legendary Creature — Dinosaur · 2/3 · Uncommon · The Lost Caverns of Ixalan · #331
Haste
When Itzquinth enters, you may pay {2}. When you do, target Dinosaur you control deals damage equal to its power to another target creature.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The Lost Caverns of Ixalan | 230 | Uncommon | $0.35 | $0.49 |
| The Lost Caverns of Ixalan | 331 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 10 November 2023You don't choose targets for Itzquinth, Firstborn of Gishath's triggered ability at the time it triggers. Rather, a second "reflexive" ability triggers when you pay {2} this way. You choose targets for that ability as it goes on the stack. Each player may respond to this triggered ability as normal.