Board Thread:General Discussion/@comment-33867385-20180119224256/@comment-32271305-20180119230645

Here are all the cards with those link skills: Prodigies, Golden Warrior, Shocking Speed, Fused Fighter.

In case you don't have enough cards, farm the ones you need from Super Strike events or Story events. In fact, all free cards are worth farming, you never know when you might need them (like in this case), especially the ones from story events, since they appear only for a limited time and come back only a few months later.

The Quests are really easy, so any team with six random cards that share the required link skill and a good Friend unit should be good enough (the Friend unit doesn't need to have that link skill).