Seven Echo Shard Lightning Ball

[Garbobo]

Seven's Lightning Ball paired with echo shard does not stack ball damage if a player is touching both at the same time.
Two separate players can be damaged by two separate balls, but you cannot do double damage with two balls.

 

[Vofi]

I think its just like a "zone" where u taking damage.

 

[Playeroth]

Seven's Lightning Ball paired with echo shard does not stack ball damage if a player is touching both at the same time.
Two separate players can be damaged by two separate balls, but you cannot do double damage with two balls.

sounds intentional

 

[dankomancer]

I believe paradox bomb and ivy kudsu work similarly.