Toth also explains that the Eldar were fighting to protect the stone, as it was they who imprisoned the daemon in the stone originally: as he puts it'as Chaos's oldest enemy, the Eldar see themselves as the only capable defence against its influence.
The Eldar were fighting to protect the stone, as it was they originally. This is what Toth explains. This they imprisoned the daemon in the stone. The Eldar see themselves as the only capable defence against its influence. He puts it'as Chaos's oldest enemy.