Start 2018 off strong with Extreme Force, the first 100-card booster set of the year! Extreme Force features a number of powerful cards that Duelists can add to any Deck, as well as brand new strategies and individual cards to bolster old favorites, like Noble Knights. For Duelists who were late to the party incorporating Link Monsters into their Extra Deck, this set has several powerful new Link Monsters to help them catch up, including a LINK-4 monster that gains extra effects depending on the number of monsters used to Link Summon it.
The Extreme Force booster set contains 100 cards:

48 Commons
20 Rares
14 Super Rares
10 Ultra Rares
8 Secret Rares