The move leechseed is bugged.

[TeamRocketAsh]

good-day pwo, so im battling with a friend, and i send out my meganium to tank using synthesis and leechseed :3, and when i realized its gonna take a critical hit from shiny dragonite, it doesn't faint, the problem is that when my hp goes down to zero (0), leechseed is active healing my pokemon's health points from 0 to 39. This is definitely a bug ty for responses. ~TrueAsh

 

[Donar]

Thanks for the report, this has been fixed as of the last restart. In the future, please use the Bug Catcher on the Playerdex for any bug reports you might have