Ineffa is a giga bait if you already have Varesa and Iansan.
they are currently in the most comfortable spot possible as together they are extremely strong and capable to bruteforce any situation where electro can be used

>electro+hydro shilling
Varesa and Iansan works great with Furina
>electro+dendro shilling
Varesa and Iansan works great Nahida, Baizhu or any other dendros
>electro+pyro shilling
Varesa and Iansan works great with B,Xl,Thoma,Chev,Mav
>geo shilling
Varesa and Iansan can rape any geo shields better than geo characters because of the ploonge
>no energy?
Varesa and Iansan can get fully charged after a single E from each
>need AOE?
Varesa and Iansan work great got it

they are the most valuable duo in the game right now, it will take a lot of effort to create a situation that they cannot deal with, that stupid cactus is fucking nothing for them, they probably can kill it faster than Ineffa even, and that will continue for many other similar cases