Roidklaus, The Cerebral

When Roidklaus, The Cerebral enters the battlefield, draw cards equal to its power, discard
cards equal to half its power.
{t}: Roidklaus, The Cerebral gets +X/+X where
X is equal to the amount of cards in your hand,
this changes with your hand size. This can only
be done once but the effect lasts.
"I ponder of something great."