Crystal Wyverns are passively tamed by climbing onto their backs near the shoulders and feeding them crystal while staying prone and centered during flight; a following flyer and emergency parachute or glider can help prevent falls. They are fast, maneuverable, breedable mounts suited to travel and egg runs, with Tropical, Ember, and Blood variants offering water-based boosts, escalating fire damage, and self-healing breath respectively, though their carrying capacity is limited. When encountering them, use a sturdy trap and kite them into it with allies, avoid high-altitude fights, and take extra care around aggressive heirs whose abilities can intensify or sustain combat.