Magical Buffs: The Support Caster is Stronger Than He Realized! (Manga) Vol. 4 by Eiri Shirai

Half of Nactlibelle has fallen to the strongest boss they've ever faced. To protect his party members, Wim casts Shift: Puppenspieler, a taboo buff of great burden. It grants overwhelming speed and highly accurate prediction abilities. However, the boss has a secret move as well, forcing Wim to cast the maximum number of buffs possible on himself. Even if he wins this fight, can he hope to survive?
Binding: Paperback / softback