Dr. Prodigy's Doomsday Machine

Partner with Dr. Delirious Prodigy, PhD (When this artifact enters the battlefield, target player may
put Dr. Delirious Prodigy, PhD into their hand from their library, then shuffle.)
{1}, {t}: Put a charge counter on Dr. Prodigy's Doomsday Machine. Each opponent loses 1 life.
{1}, {t}, Remove three charge counters from Dr. Prodigy's Doomsday Machine: Destroy target permanent.