Check out my expensive, yet technically still f2p valkyrie deck, i'm glad to say i haven't payed at all to get these. They got me to kog and lvl max against top
Messing around with Valkyrie : r/DuelLinks
META POTENTIAL! NEW VALKYRIE DECK - Post Arena Of Sanctuary [Yu-Gi-Oh! Duel Links] - YouTube
Finally reach Legend with Valkyries deck. On my way to KoG now : r/DuelLinks
Power Angel Valkyria - Structure Deck: Wave of Light - YuGiOh