Obsessive Geek

Enters the battlefield tapped. Does not untap
during owners untap phase. Sacrifice artifact to
untap. While untapped it deals 1 damage to all
other players each turn.
{t} In addition to regular attack, player must play
an artifact from the library or the graveyard.
He refused to get up unless you took his computer
away. Now he is a nuisance to all.