Tome of Insanity

{2}, Discard a card: Draw a card.
{2}, Discard a card: Tome of Insanity deals 2 damage to target creature.
At the beginning of each end step, if you had activated three or more abilities of Tome artifacts you control this turn, you may exile up
to two cards from your graveyard. If you do,
Tome of Insanity deals 2 damage to target player for each card exiled this way.