Hollow Knight: Silksong is a non-linear adventure that encourages thorough exploration of its perilous maps. As you journey, you`ll encounter unique NPCs who offer quests known as `Wishes.` One such quest, the `Flexile Spine Wish,` is given by the Seamstress in the Far Fields. To complete it, you`ll need to locate 25 Spine Cores, a task that fortunately won`t require an extensive search.
Locating Spine Cores in Hollow Knight: Silksong
To acquire Spine Cores, you need to target enemies known as Hokers. These creatures appear as floating white orbs adorned with a green beard and spikes. Upon exiting the Seamstress`s dwelling and heading to the right, you`ll find several rooms teeming with these foes, ensuring you won`t have to venture far for your collection.

Your objective, however, isn`t to defeat the Hokers, but rather to harvest their spikes. Each time you strike a Hoker, it will launch spikes that adhere to nearby surfaces. You can then strike these embedded spikes to release an orb containing a Spine Core. Repeat this process 25 times to fulfill the quest requirement.
Each Hoker can withstand up to three hits before being defeated. The optimal strategy is to strike it once, then wait for it to regenerate its spikes. If you hit the Hoker before its spikes have regenerated, you will yield fewer Spine Cores from that particular creature.

Furthermore, be aware that the spikes launched by Hokers will vanish after a brief period. Therefore, act swiftly to collect the Spine Cores before they disappear.
After gathering all 25 Spine Cores, return to the Seamstress to claim your reward: the Drifter`s Coat. This upgrade enables you to glide after a jump and utilize the air currents prevalent in the area, allowing you to explore even more remote locations.
Many other `Wishes` await completion throughout your journey.