Leizi S2 is a mlynar sidegrade. Her S2 is comparable to his S3
Mlynar wins vs high RES enemies like mandy. Leizi wins at elite spam
https://www.bilibili.com/video/BV1jZGHzTEcL/

Hover mode works with entelechia S2 blades, it hits ground AND aerial enemies
https://www.bilibili.com/video/BV18pGJzpE5D

Leizi vs every boss
https://www.bilibili.com/video/BV1M3GpztEDu/
https://www.bilibili.com/video/BV1DMGpzbE5W/

S2 only extends her range to the melee tiles she hits on the initial lightning cast.
She cannot hit beyond walls if they weren't connected within her melee tiles on lightning cast.
She will hit nothing if there's no adjacent melee tiles for her to start the lightning cast from
https://www.bilibili.com/video/BV17VGHzTE3d/

S3 lightning gets stucks on stainless S3 turrets for unlimited bounces
S2 and S3 hit flying enemies. Lightning balls of S3 do not, only her personal attacks
She is still damaged by enviromental tiles like bleeds or coomfloor even while hovering
https://www.bilibili.com/video/BV1UGGpzdEtb/