Kindred's Seal
Kindred's Seals can be farmed beginning at level 50.
Any monster that checks as at least Easy Prey to a level 50 or above character has a 33% chance to drop one Kindred's Seal upon its death.
Note: The pool for Beastman Seals, Kindred's Seals, Kindred's Crests, and High Kindred's Crests is shared, and only one seal/crest may drop at a time.
Farming Areas
Escha - Zi'tah - All normal monsters have a 5% chance to drop a Kindred's Seal.