Ancient coin (and Janna) are busted.

Janna has a 56% winrate with the highest playrate out of any support.

Let's think about this for a second... She's the go-to pick for autofilled supports and she STILL boasts a 56% winrate.

You can ban her, except you can just pick the next best support that goes ancient coin into ardent (Sona + Soraka). There are people going coin on BARD and rushing ardent for his shrine heals.

Janna has been consistently strong and this with ancient coin being overtuned makes her actually ridiculous.

P.S. Please ban Janna. I dislike having to burn my ban on her every game since not enough people realize she's broken.