Memory Seeker

When Memory Seeker enters the battlefield,
draw X cards, where X is your devotion to blue.
(Each {u} in the mana costs of permanents you control counts toward your devotion to blue.)
{2}{u}, {t}: Discard your hand, then draw X cards.
_________________________________________
"The mind is a treasure few can unlock its potential.
Be at ease that I have the keys of it."