Atomic Skull

When Atomic Skull enters the battlefield, scry 6
Fear, hexproof.
{t}{x}: Exile X cards from the top of target player's library.
{t}: For every card in exile, draw a card - that card costs {1} less.
For every point of damage Atomic Skull deals to a player, that player pays {1}. For each mana they fail to pay, they must discard a card at random.