Lucian, Summoner Adept

Whenever Lucian, Summoner Adept becomes
tapped, you may exert it
{t}: Put up to two charge counters on Lucian,
Summoner Adept. You may put a creature card
with mana value equal to the number of charge
counters on Lucian from your hand onto the battlefield. If Lucian is exerted, instead search your library for a creature card with mana value equal to
the number of charge counters on Lucian and put it
onto the battlefield.