Linu’s Favor is a campaign currency used in the Tyranny of Dragons(ToD) campaign. In the first 90% or so of progression you only need to get a couple which is pretty easy, but at the last two boons, you will need a combined 80 Linu’s favor to unlock them which will take some time.
There are two ways of getting Linu’s favour, the quickest way is to combine both of these. First, you can donate three different other currencies that you get while doing all things ToD related. You donate them to a cart in the middle of the Well of Dragons, next to Elminster, if you have the Rewards for the Hoard quest that will reward you with a Linu’s Favor when you reach 1500 points.
- Dragon Hoard Coins: You get these everywhere while working on the ToD campaign. You need these for pretty much every task in the ToD campaign as well so make sure you don’t donate all of them. (1 coin equals 5 points.
- Dragon Hoard Coffers: These are the most farmable of the three currencies. You can get these by either getting a group and farming Heroic Evens in Well of Dragons, these are somewhat rare nowadays. Or you can join a Dragon Run or DR. These start at a quarter to every hour. Simply go to Well of Dragons, and ask for a DR invite, then move to the zone where the DR is going to happen. One full DR will reward you with around 15 coffers. If you have AD to spend you can also buy these from the AH.(1 coffer = 15 points)
- Dragon Empire Treasures: These are somewhat rare to come by. You can either do a task in the ToD campaign to get one or you can buy them from the Wondrous Bazaar.
The second way to get Linu’s Favor is to defeat Tiamat in the Temple of Tiamat. As people are better geared these days, this is pretty easy and you should be able to do this fast by queing to Temple of Tiamat.