Imprisoned Queen Archfiend (PTDN-EN032) - Phantom Darkness Unlimited

This card's controller pays 1000 Life Points during each of their Standby Phases (this is not optional). During your Standby Phase, if "Pandemonium" is on the field and this card is in your Graveyard, 1 Level 4 or lower Fiend-Type monster gains 1000 ATK until the End Phase.