User blog comment:Gary299/High School DxD BorN episode 4 review/@comment-26209278-20150425182745/@comment-3965848-20150425184112

What further brings closet to Yu-Gi-Oh is the fact thst he "summons monsters to the field" and brings in his own set of "spells and traps", also the water serpent that Sona used to fight the Midgardsormr clone reminds me of the Water Dragon from Yu-Gi-Oh GX