Even a tree that lives for two thousand years becomes extraordinary, not to mention a Great Arcanist who possessed supreme strength two thousand years ago.
Gaven feared that once he confronted the other party, all his secrets would have nowhere to hide.
However, as his strength gradually increased, Gaven realized his initial concerns were unnecessary. At the level of these ancient beings, which one hadn't tumbled through other planes? They've probably seen plenty of 'Children of the Planes', so to them, he was merely a variable from Toril, representing a possibility. Until he grew into matching strength, he was nothing at all. They wouldn't slaughter indiscriminately over this; if they did, Toril would be the first to fall into chaos at their hands.
