Ten Oaths of Protopaterpolis' War Booster Box

Ten Oaths of Protopaterpolis' War Booster Box came out in May 2025; we leave the first weeks out of this story, because early prices are set before real supply exists. In the last year the price changed −53.1% and ranged from $52.94 to $112.82, and it now trades near the bottom of that range. Listings currently start at $45.00; over the last 30 days the market price averaged $54.62.

Each sealed booster box case contains 36 packs.

Alex Sansta and Zacky have achieved the impossible: preventing the kingdoms of Protopaterpolis from plunging into all-out war. A peace treaty has been signed by all nations surrounding the Sacred Ruins. And yet… war has begun. But this will not be just any war.

From the depths of the interdimensional void, the Conqueror, Gill Lapis, has descended upon Protopaterpolis. And he does not come alone. At his side march his most loyal and fearsome allies: Ashwyn, Commander of Darkest Fires; Sylvia, Blade of the Primogenitor; and Blazer Gill Rabus. Behind them, an army of Cryptids spreads like an unstoppable plague. But this is only the beginning. Two unexpected allies have joined him. Thoth, a god, wielding the power of Sandora, commanding the undead hordes of sand; and the ultimate calamity: Helen, the Witch of Forgotten Memories. The enemy or the First Witch War of Protopaterpolis, disappeared long time ago, which became nothing more than a whispered ghost among the survivors.

With the entire world on the brink of destruction, its fate hangs by a thread. The Coalition, Academy City, the HANADA Group, and the three kingdoms of the Underworld, the Light Castle, the Federation, and the Forest of Amonsulle, must unite under a single banner.

The heroes rise: Lucie, Lyka, Alex Sansta, Goliath HANADA, Hachisuka Sansta, Moonglow VIII, Rucheel, Yggssei, Utsunes, Echo… and even Wu Xiaohu, who must finally uncover whether he is truly just a cat. Before the end, ten oaths will be sworn. Ten oaths that will shape the fate of an entire world. And one snap.

The final battle between light and darkness is about to begin. Who will emerge victorious? The war is here. It is time to pick a side.

Welcome to the fourth and last set of the Trinity Cluster! In this set, the battle that will decide the fate of Protopaterpolis, and perhaps many other Force of Will worlds, will unfold. Four familiar characters, Queen Hachisuka, Robo Maeda, Ashwyn, and Helen, return as never before seen, as rulers on both sides of the conflict. As with every end-of-Cluster set, T4 will support all rulers released during the Trinity Cluster, with new support cards for each ruler of the Trinity Cluster, enhancing new strategies for them. This set also introduces a unique new ability: Oath, a way to express determination to win the war through cards! The time has come: pick a side and join the final war in the Trinity Cluster world of Force of Will!

Product Breakdown

• Normal: 41 kinds

• Rare: 26 kinds

• Super Rare: 20 kinds

• Marvel Rare: 5 kinds

• Rare/J-Ruler: 4 kinds

• J-Ruler: 1 kind

• SSR: 1 kind

• XR: 2 kinds

• Secret Card: 4 kinds

• Special Secret Card: 2 kinds