Zero joker

Zero Joker (ゼロ・ジョーカー, Zero Jōkā) is a spell of the Dark alignment in Magical Starsign. If the protagonist is aligned with Dark Magic, he or she will learn this spell at Lv 52.

Front row
The caster calls forth the Grim Reaper, who uses its wicked scythe to strike an enemy.

Back row
In similar fashion to the front row version, the Grim Reaper is summoned to the field, but instead wields two scythes. It unleashes six slashes that target enemies at random.

Name origin
Zero Joker likely refers to the practice of Cartomancy, wherein a Joker is included in a standard 52-card deck and bears a similar meaning to the Fool card of Tarot. In some instances, two Jokers (referred to as a black Joker and a red Joker) will be used in the deck, and the black Joker has a rank of zero.

Trivia

 * Zero Joker has the highest set MP consumption of any spell.