Remnant of Hollowness

Once per turn, if Remnant of Hollowness is in
your hand, you may reveal this card and discard
any amount of Loot cards from your hand. If
you discarded at least 1 card, draw a card.
If at least 4 Loot cards are in your graveyard,
deal a pool of 8 damage divided as you choose
among any number of targets. Otherwise, deal
a pool of 4 damage.