Mists of Ravenloft (Heroic)

Requirements
Note: Although a character can start the saga quests at level 7 (for Level 10 quests), the Saga giver will not speak with a character until they are Level 9, high enough to complete the level 12 quests and the saga.
 * Into the Mists (level 10)
 * Death House (level 10)
 * Fresh-baked Dreams (level 10)
 * An Invitation to Dinner (level 10)
 * Oath of Vengeance (level 11)
 * A Raven at the Door (level 11)
 * A Mad Tea Party (level 11)
 * Sealed in Amber (level 11)
 * Ravens' Bane (level 12)
 * The Final Vintage (level 12)
 * Wrath of the Earth (level 12)
 * Sunrise (level 12)

Sample rewards

 * Normal (All on Normal) - One of: 16k XP / +1 Tome of Skill / 40 Vistani Talismans / 5k Guild Renown
 * Hard (All + 21 points - 3 on Normal, 9 on Hard) - One of: 22k XP / Choice of one of two +1 skill tomes / 40 Vistani Talismans / 7.5k guild renown
 * Elite (All + 30 points - 6 on Hard, 6 on Elite) - One of: 35k XP / Choice of one of three +1 skill tomes / 40 Vistani Talismans / 10k guild renown
 * True Elite (All + 36 points - all on Elite) - One of: 46K XP / Choice of one of four +1 skill tomes / 40 Vistani Talismans / 15K guild renown