http://i.imgur.com/ao7Ka.jpg
Release Dragon Master/Mistress 
a 1350 Rp skin , and Dragon master 
As a legendary skin
Dragon slayer 
Dragon slayer themed ARAM map or maybe a new map , Dragon master swain being the last boss just like EVIL TEETO DOOM BOTS
Basically a Dragon themed event with new freaking awesome dragon themed skins
These new skins really feel like a slap in the face to Swain players who have been waiting years for the long promised Dragon Master skin.
Why Xin Zhao? He has already six skins and a chroma pack. Now he's getting yet another skin and a SECOND chroma pack? Zyra I don't mind as much, as she's been pretty heavily neglected and has the same number of skins as Swain.
But still... these new skins kinda came out of nowhere! Who even asked for these? And why is Riot willing to go to all the trouble to design and create TWO brand new Dragon themed skins for these champs, while they continue to renege on their years old promise of Dragon Master Swain? If they have the resources to create these skins, why didn't they devote them to keeping their Swain promise first?
Riot, you need to be more transparent about this, and you need to work harder to regain some trust with players on this issue, and avoid breaking trust in the future.
Only Yasuo, and Olaf, maybe Sion are vicious enough champions to warrant a dragon slayer skin. Dragons like sol and shyvana don't make sense to be dragon killers cuz they're dragons themselves. Swain throws crows and poison and shreaks when he turns into a mad bird man... hardly something i imagine killing a dragon. Nice drawing though.
...still hoping A'Sol gets something heavily referencing Alduin.
Dragon Master/Mistress/Tamer:
Dragon Slayer:
A new game mode for these dragon related skins would be great. You would fight champions worshipping the dragons on the map but every time you kill one of them, the others are consuming his body and become stronger. So your team have to decide in which order you are going to kill these champions. When the last one is killed, the endboss appears devouring the last remaining body.
I understand that you want Swain to be the boss to celebrate his skin, but tbh, he doesn't really make sense as a dragon game mode boss. The boss should be Shyvana or Aurelion Sol (so: an actual big dragon). Swain is just using a small dragon as an animation for his Q and can switch to a half dragon creature with his R. He is way more in line with other dragon worshippers, meanwhile Shyvana and Aurelion Sol are dragon themselves.
I'm still waiting for Dragon Slayer Shyvanna :/
