A level 52 quest for both factions, from level 47.
Unchanged in Forever as far as is known: the text, objectives and rewards below are Classic’s.
Deliver Linken's Superior Sword to Linken in Un'Goro Crater.
Provided: 
Linken's Superior Sword
After a strong flash of light, you are able to pick up the sword again. It has been transformed!
Money: 750 gold, 75 silver, 0 copperExperience: 5,100
Oh! I remember you! You are... No, don't tell me!
My sword... It's finished!
Now, if only I could remember why I needed this...
Here, let me at least pay you for your work.
13 quests from level 52 to 56, 56,900 XP in all.
[52]It's a Secret to Everybody
Look around in the pond for a clue about who this wrecked raft may belong to.
A Wrecked RaftUn'Goro Crater
1,250 XP
[52]It's a Secret to Everybody
Examine the items inside the pack and bring them to their owner.
A Small PackUn'Goro Crater
5,100 XP
[52]It's a Secret to Everybody
Take Linken's Sword to Donova Snowden in Winterspring.
LinkenUn'Goro Crater
5,100 XP
Seek out Gregan Brewspewer in northern Feralas.
Donova SnowdenWinterspring
5,100 XP
Go to the graveyard outside Gadgetzan, and use the Videre Elixir.
Donova SnowdenWinterspring
5,100 XP
Resurrect, then look for the gravestone that Gaeriyan told you to find.
GaeriyanTanaris
2,550 XP
[52]Linken's Swordthis quest
Deliver Linken's Superior Sword to Linken in Un'Goro Crater.
A Conspicuous GravestoneTanaris
5,100 XP
Find J.D. Collie in the cave at Marshal's Refuge.
LinkenUn'Goro Crater
1,250 XP
[54]Silver Heart
Collect 11 Silvery Claws and 1 Irontree Heart for Eridan Bluewind in Felwood.
Eridan BluewindFelwood
5,450 XP
[54]Aquementas
Take the Book of Aquor, the Silvery Claws, and the Irontree Heart to Tanaris. Use the Book of Aquor to summon Aquementas. After you have the completed totem, take it to J.D.
Eridan BluewindFelwood
5,450 XP
Take the Silver Totem of Aquementas to Linken in Marshal's Refuge.
J.D. CollieUn'Goro Crater
2,700 XP
[56]It's Dangerous to Go Alone
Travel to Fire Plume Ridge, south of Marshal's Refuge. Find Blazerunner and use the totem to remove his protective aura.
LinkenUn'Goro Crater
7,300 XP
Text, givers, objectives and rewards come from the cMaNGOS Classic database (a reconstruction of the 1.12 world), with what Forever changed on top: the game server’s own answers where we have them, else Wowhead’s Forever database. Places are Classic’s, shown on the Forever maps. Quest text © Blizzard Entertainment.
