Jasastur

Jasastur used to live only in the dimension of dreams, tormenting monsters in their sleep until, one day, a nightmare Baba Yaga was having felt so real that Jasastur trespassed dimensions. Now he can become your deepest fear even if you're awake.

Overview
Jasastur is primarily a denier with an AoE Possession and Nightmares, but is well known for his support move that gives all allies Dark Immunity, Possession Immunity, and Nightmares Immunity. He also can give his team free Stamina while simultaneously removing Stamina. He’s great at defeating many monsters, but is utterly useless against monster who are immune to possession.

Pros
 * Good Stats
 * AoE Possession
 * Great Trait
 * Stamina Drain
 * 2 turn possession to Single Enemy
 * 8th fastest monster in the game
 * Immune to Dark attack, Possession, Nightmare to all allies

Cons
 * Major Cooldowns
 * Lots of Stamina
 * Low damage moves (then again, deniers don't really need damage)

Recommended Moveset

 * Faceless Being (35 AoE Special dmg + Possession w/ 35s, 3 turn CD)
 * The Crawling Chaos (AoE 50% Stamina Removal + Stamina Leak w. Give 50% Stamina to all allies / 0s, 4 turn CD)
 * Thousand Forms (50 Dark dmg + MegaPossession w/ 28s, 2 turn CD)
 * Night of the Tentacle ( 45 AoE Dark dmg + Dark immunity + Possession immunity + Nightmare immunity to all allies / 41s, 3 turn CD)
 * 3 Speed

Countering
Jasastur is a very dangerous monster to face, and when combined with VoltaiK or Thetys he will dominate. General Ingvar and Goldfield are good against his "Night of the Tentacle". He does have a problem with instant death and Light elements so Layth or Incognita are good counters.

Book Analysis
Underworld


 * Viability Rank: S (9/10)
 * Effectiveness: 7/10
 * Comparison to Competition: 7/10

OVERALL RANKING: 8/10

Jasastur is not the best choice for Underworld wars, as many monsters are immune to possession. This makes him mostly useless. There are better monsters to use, such as Ouros, Demise, and Rador.

Evil Legions


 * Viability Rank: S (9/10)
 * Effectiveness: 9/10
 * Comparison to Competition: 8/10

OVERALL RANKING: 9/10

Here, Jasastur is much more useful, as monsters are more diverse and weaker to possession.

Dark


 * Viability Rank: SS (9/10)
 * Effectiveness: 6/10
 * Comparison to Competition: 6/10

OVERALL RANKING: 7/10

Here, Jasastur is even less useful than in the underworld wars. Monsters are LOADED with possession immunity, even when they don't even possess.