Step 1: Kidnap a Lalafell.
Step 2: Trick a Lopperet into follow you for free carrots.
Step 3: Unlock Goldsmith.
Step 4: Unlock Alchemist.
Step 5: Level up Goldsmith and Alchemist to lvl 90.
Step 6: Create a pair of Potara Earrings.
Step 7: Have both subjects wear one of the pair of earring on opposite of the other subject's ear.
Step 8: Potara Fusion ensues.
Step 9: Hire Sidergu to rip a Moogle Pom off a Moogle's head.
Step 10: Buy super glue from the Sharlayn markcets and attach pom to fused Lalarruet's head.
Result: Huzzah, now you have an Ivalician Moogle!