Legendary Warrior is not something we aren't familiar about: in fact, the archetype emerged quite a few weeks ago (with the release of Kresh, Lord of Turtling and Archdruid Naralex in the Wailing Caverns mini set) and it's been a popular (and winning) one since then. As usual, you want your minions to come down as fast as possible and with a bang: All Together Now is a solid tier 1 Passive Treasure for a deck with lots of cheap Battlecries like Brightwing and Mankrik, while in the second pool you should go for either Disks of Legend or Battle Totem.

Passive Treasures chosen by the player during their 12 wins run

First pool - All Together Now

Second Pool - Disks of Legend