"Legion of Dragons & Blades" is the 16th Booster Set released in the Japanese format, and the first associated with Season 4. It was released in the English format as "Legion of Dragons & Blades ver.E".

* Includes 102 cards (8 RRR, 12 RR, 22 R and 60 C), + 12 SP (Parallel) cards + 2 LR (Legion Rare) cards.

* There is a total of 101 new cards and 1 reprinted card.

* Includes further support the Royal Paladin, Narukami, Nova Grappler, Dimension Police, Spike Brothers, and Neo Nectar clans.

* The booster's slogan is "Unleashed! Legion power!!"