Windy

Windy is a medium to high priority pet. The improvement to the Inner Passion passive skill is very powerful but requires a large investment in units (60 total!) to maximise.

Hero Couple (Sylphid)
Upon reaching 5* increase the Sylphid's Crowd Control and adds some support buffs.

Acquisition
Spirit Highlands Pet Shop
 * 9-1 (1 Frag)
 * 16-5 (3 Frags)
 * 18-10 (3 Frags)
 * 21-16 (1 Frag)

Available for Gems, Guild Coins and Honor Coins.

Secret Shop

Available in the Secret Shop - 5 excess fragments for 2 Windy fragments.

Skill 3 - Awakens the hidden special ability of Senior Sylphid

 * When first appearing, movement speed and attack speed of allies increases significantly for a certain period of time. This also delays enemy skill casting.
 * Basic game speed increases by 4%.
 * Unit's attack range and movement speed increases by 5%, and attack power, attack range, and critical hit rate of all units increases by 5%.
 * Does not freeze due to cold attacks.
 * Normal attacks paralyze enemies for a longer time, and they ricochet to attack more enemies.
 * Increases skill attack duration.
 * Inner Passion limit break : Inner passion max increases by 5 per Senior Sylphid. (Maximum increase from Sylphid/Windy is 50)
 * Gold level limit of Sylphid increase (Senior - 0, T1 - 20, T2 - 40, T3 - 60).
 * When included in team Sylphid increases Medal buff by 50% More (T1 - 15%, T2 - 30%, T3 - 45%). These buffs are halved in the Time Shop.