Magic Seal

Magic seals were introduced in Castlevania: Dawn of Sorrow and involves the player using the touch screen to draw a symbol. The magic seals were used by Soma Cruz to open doors in Celia Fortner's castle and were also needed to permenently destroy bosses. Magic seals are used automatically on doors but if Soma fails to use one properly on a boss then the boss would continue living until suffering even further damage which would give the player another chance to perform the seal. Julius Belmont claims to not need magic seals because he can destroy boss enemies before they regenerate, a feat that Soma finds "impossible".