Miss Jenna Proudmoore
ally - human mage
ATK: 7 arcane
text: When you play "Miss Jenna Proudmoore" put 1 "Water Elemental" token with 4 arcane attack and 4 life to your side.
Miss Proudmoore led human survivors of Lorderon to Kalimdor were she made alliance with Horde and Night Elves to defeat Burning Legion.
Fallen Prince Arthas
ally - undead paladin
ATK: 9 melee
text: Untargetable, Evasive
Prince Arthas fell during previous war to influence of the Lich King becouse of his runeblade Frostmourne. He destroyed his kingdom and people.
ally - night elf druid
ATK: 6 nature
text: When you play "Furion Stormrage", you may pay 6. If you do, put 2 "Saproling" tokens with 2 nature attack and 2 life to your side.
Legend of Mount Hyjal tells that it was Furion Stormrage that summoned wisps to attack Lord Archemon and stopped assault on World Tree.