Plague Horror

It starts off the fight with a party-hitting Doom spell. When the Plague Horror casts Haste on a character, it is doing you a favor. The only reason why it fails so often is because the characters have a high magic evasion stat and the multiplier prevents the target from benefiting. Haste and Slow have no impact on the Doom status timer, and therefore this strategy backfires on itself by allowing you more turns to attack.