I finally got Mercy today 
and was trying to figure out how to work her into teams. So I was wondering, what are people’s favourite teams with Mercy in them? Or how do you usually use her?
Eg I was looking at the classic Treant, Alchemist, Valkyrie, Banshee and wondering if I could replace Alchemist for Mercy once I get her leveled up a little bit? EDIT: Actually probably not, just realised that Treant mana blocks Mercy 
My lineup was Mercy, Infernal King, Sheggra, Star Gazer; all fully traited.
Mercy comes into her full strength when fully traited. You’re going to need 12 Swamp Arcanes to do that.
Good news is that they are part of the Ultra Rare bundle this week, so you should be able to get some/all of them with lots of play and maps.
I like mercy with Gorgotha or Great Maw. Infernal king works well with her as well.
Mercy is more effective then alchemists only in case you have her fully traited. Keep that in mind.
Sometimes only during the first round based on the teams. A mana generator tied to converting a single color is not that flexible. Plus the alchemist has that gold thing
Templar***, priest***, tyri***, mercy***. Deny all the things and watch the opponent’s strongest stuff just die of starvation.
I like:
Templar
Mercy
Moloch
Paladin
Green/yellow banner. Fully leveled and traited. And that’s four unique Whitehelm troops for kingdom bonus.
10Char
In before Lyya!
How many colors does it cover? I am too lazy to count.
Everything except purple, which Mercy transforms.
Sleep’n stuff!
Okay so yeah, Mercy teams?
Anointed One
Mercy
Sheggra
Valkyrie
Red/Red banner
( http://ashtender.com/gems/teams/anointed-one,mercy,sheggra,valkyrie )
This is my go-to PvP invade team.
The Great Maw
Infernal King
Mercy
Sheggra
Yellow/Yellow banner
( Custom Team - Teams - Gems of War Database )
Discussed to death here, currently OP flavor of the month.
Gorgotha
Giant Spider
Sorcerer Hero / Burning Scythe
Mercy
Purple/Purple banner
( Custom Team - Teams - Gems of War Database )
Can swap Mercy and Spider slots if you want a more defensive build.
Anointed One
Mercy
Green Seer
Ranger Hero / Cauldron
Red/Red banner
( Custom Team - Teams - Gems of War Database )
How much attack can one troop get? Let’s find out!
Jarl Firemantle
Priest Hero / Eternal Flame
Goblin Rocket
Mercy
Red/Yellow banner
( Custom Team - Teams - Gems of War Database )
Burn all the things!
Templar
Mercy
Paladin
Valkyrie
Yellow/Green banner
( Custom Team - Teams - Gems of War Database )
Divine bonus helps get Paladin started, and she feeds him well.
Gorgotha
Infernal King
Moloch
Mercy
Yellow/Yellow banner
( Custom Team - Teams - Gems of War Database )
It’s a party! Hope you wore yellow.