Pterodactyl

The Pterodactyl mutation delivers a x12 sell multiplier, placing it firmly in the upper-mid tier of value modifiers, well above common growth mutations but short of the storm-class jackpots. You recognize it on a harvest by the fast wind particles whipping around the produce, a clean visual cue that the bonus has actually applied.

Its origin is the now-retired Dinosaur Egg, and crucially it could once be rolled through the DNA Converter too. Both the Dinosaur Egg and the Converter route are now closed, so the Pterodactyl effect is effectively a legacy mutation: anything you already own keeps the x12, but fresh access has dried up. That scarcity quietly props up the worth of crops already wearing it.

For stacking, a flat x12 is a strong multiplicative layer that compounds with rarity and weather mutations rather than overwriting them, so a Pterodactyl-tagged fruit that also catches a high-tier weather event can balloon in price. Chase value here is less about farming the source and more about preserving and combining: bank the mutated produce, pair it with whatever multipliers you can still trigger, and sell when the stack peaks.