Army of the Black Dragon Tharg in Brackenwall Village wants you to kill 15 Firemane Patrollers, 10 Firemane Ash Tails, and 5 Firemane Guards.
Maraudon Horde Quest
Vyletongue Corruption (Horde) Fill the Coated Cerulean Vial at the orange crystal pool in Maraudon.
Use the Filled Cerulean Vial on the Vylestem Vines to force the corrupted Noxxious Scion to emerge.
Heal 8 plants by killing these Noxxious Scion, then return to Vark Battlescar in Shadowprey Village.
The Hinterlands Horde Quest
Message to the Wildhammer - (Step 1) Otho Moji'ko at Revantusk Village in the Hinterlands wants you to slaughter 15 Highvale Outrunners, 15 Highvale Scouts, 15 Highvale Marksman and 15 Highvale Rangers. Return to him when this task is complete.
You can find the Highvale high elves at the Quel'Danil Lodge in the northwestern region of the Hinterlands.