Lucian the Elminster

Flying, Prowess, Hexproof, Indestructible
Lucian can't attack
Lucian enters the battlefield with X knowledge counters on it
{t}: Draw a card for each knowledge counter on Lucian
{t}: Put a knowledge counter on Lucian
{t}, Remove six knowledge counters from Lucian: search your library for a card and put it into your hand.