Sloth is one of the Seven Deadly Sins from Abrahamic Lore. Sloth is a sluggishness towards doing good. It is a kind of laziness which is not interested in other people's prosperity, but only in whatever is easy. Sins like idleness, negligence, and despair can all come from sloth. The demon that represents Sloth is Belphegor and the corresponding virtue is diligence and zealotry.
Sloth's Spell Card can't be acquired through normal means, only via the use of cheat codes. It is however usable in fusion and possess inheritable skills.