Cassiopeia Support
Okay, had a conversation with someone who thought it worked.
WIth the way her abilities are aligned, the only thing she really has is her ult, which slows or stuns, and her miasma, which slows just a tiny bit. I suppose there's always her poison, but past lvl 3 she falls off because lack of farm. Her passive entirely relies on her stack getting up to at least 200, and wont happen until SUPER late game if you're support, even if you poke the enemies nonstop. You still need gold, and poking doesnt give gold.
Or is her poking/poison why she's a good support? She doesn't really buff her allies in any way though.