This is my guide on the new champ that has just been released. Hope you enjoy.

Seals and glyphs are pretty standard for a support: some health to resist the attacks of the adc, and scaling magic resist glyphs for late game. For marks I like to take magic penetration, so I can be a more aggressive support and spam my Q at the enemy. And finally and the most important runes are the Quints. Bards passive creates charms around the map that work a little like thresh's souls. By roaming around the map you can help the other lines quite a lot while still obtaining gold and experience. With that said it is essential to get around as quickly as possible hence the mov speed Quints.

Standard support masteries. I put the 9 points into the offence because as I said before I enjoy poking as a support. It is equally good to put them into defense.

Pros
+ Amazing roaming
+ Great mobility for team with E
+ Ultimate can be a game changer
Cons
- The ultimate needs a lot of skill to master
- Roaming badly could drastically change the game of your adc (for the worse)

Frost Queen's Claim
It's a support item that gives you a bit of extra AP and gold income that compensates for the lack of farming you do.
Mobility Boots
To get the most out of your passive you will need to roam around the map and help up other lanes. Out of combat these boots give you the greatest amount of movement speed. Other boots are less effective on this champion and I highly recommend you always take these ones.
Luden's Tempest
This item is the replacement for the DFG and it is basically a Statikk Shiv for mages. On top of the amazing AP boost it gives an additional 7% mov speed (yes you need to move a lot).