Aside from the obvious synergy with a deck built around Azorius flyers, I think that the way that she shuffles things around the table is interesting and can lead to some fun situations
That being said, more Storm is always better, and sadly it can be difficult to generate lethal Storm counts
As proliferate can be used to add counters to anything that already has counters on it, you can garner favor with opponents by growing some of their creatures or planeswalkers
(2/4/2023) To proliferate, you can choose any permanent that has a counter, including ones controlled by opponents
Tromell, Seymours Butler* I dont really remember Tromell, but this card is a good fit for +1/+1 counter decks, especially for those that want to go wide, and in elf-ball decks