Revealed during the Anime Expo 2018 "Fate/Grand Order
1st Anniversary Celebration Event" by Aniplex, the Guaranteed Summon Banner has returned! However, unlike last time, there is a much larger array of Servants that can possibly pop up. In fact, instead of 1 Gacha, there are 2 Gachas to choose from. On one hand, there is "The Three Knights & EXTRA Guaranteed Summon" that includes only Saber, Lancer, Archer, and Ruler Class Servants. On the other hand, there is "The Four Cavalries Guaranteed Summon" that includes only Rider, Assassin, Caster, and Berserker Class Servants. In both cases, you are guaranteed at least 1 SSR/5 Star Servant. These 2 gachas can only be redeemed once and requires 30 paid Saint Quartz. Needless to say, tickets will not work.
In addition, Leonardo Da Vinci (SSR Caster) belongs to her own dedicated, normal banner. Each gacha will only last until July 17th, 2018.
P.S. No whale, no salt, and free quartz