VJMP-JP255 精霊［マギストス］コロゾ Magistus Chorozo (Chorozo, the Magistus Spirit)
Level 4 DARK Spellcaster Fusion Tuner Effect Monster
ATK 1000
DEF 2800
Materials: 1 Fusion, Synchro, Xyz, or Link Monster + 1 Spellcaster monster
Must first be either Fusion Summoned, or Special Summoned (from your Extra Deck) by sending 1 Fusion, Synchro, Xyz, or Link Monster Card and 1 Spellcaster Monster Card you control to the GY.
(1) Once per turn, when a monster declares an attack: You can target it; negate the attack, and if you do, this card gains ATK equal to that monster’s (until the end of this turn), then you can return that monster to the hand.

Note:

Most likely its name is a manipulation of Choronzon, a demon from the research of Edward Kelley and John Dee’s Enochian magic system, that was later incorporated into the Thelema religious system as the “Dweller of the Abyss”, serving as the last great obstacle between the Adept and their enlightenment, but he can be harnessed to achieve Ego Death, to attain greater enlightenment.

Source: Yu-Gi-Oh!.JP