How are Sersi and Toad? Worthy of R3?

DireWolf199

I heard Sersi is very good on defense, does she need awakening for it?
What about Toad? How does he fare in the contest? He has a synergy with Scorpion that caught my eye, is he worth ranking up?

shut_up_heather

Sersi worth R3, does not need dupe but greatly increases utility.
Toad IDK