Soul of Flight

The Soul of Flight is a Hardmode crafting material used solely to craft various types of Wings. Souls of Flight are dropped by Wyverns and Arch Wyverns, and are the most common Soul aside from the Soul of Light and Night. In all cases, one or two other "wing key" items (mostly rare drops from powerful enemies or bosses) are needed to choose what sort of wings will be made.

Souls of Flight are dropped at the position of the Wyvern's head upon death, and like all other Souls, float in midair at the drop point, rather than falling to the ground. This can make Souls of Flight more difficult to spot, eg. if the Wyvern's head was off-screen or within blocks at the time of death.

Crafting all the Wings that need Souls of Flight requires 300 / 315  / 295  Souls of Flight, meaning the player must defeat Wyverns 30-60 times, 15-30 on Expert mode, and 21-32 on the Console version and 20-30 on the Mobile version.

Tips

 * Crafted wings sell for significantly more than the Souls of Flight and other materials that went into them, so extra souls are best crafted into wings (using whatever "wing key" items are available) for sale.
 * Wings give far better vertical mobility than even Frostspark boots, plus immunity to fall damage. They are pretty much a "must-have" accessory for Hardmode.
 * In early Hardmode, it may be easier to buy Leaf Wings from the Witch Doctor, despite the expense. This will provide an immediate leap to the upper tiers of wing power without need to fight Wyverns and other powerful enemies.  Post-Golem, the Steampunker Wings likewise provide a significant jump without facing the powerful bosses which drop the keys to other comparable wings.

History
Âme de Vol 비행의 영혼 Эссенция полёта