The summoning condition of Dark Necrofear requires you to banish 3 monsters which fulfills the activation condition for Pot of Acquisitiveness. Return the 3 Banished monsters to the deck and draw a card.
Black Luster Soldier - Envoy of the Evening Twilight
Destiny HERO - Doom Lord can only banish your opponent’s monsters temporarily. To make it a more powerful form of disruption, you can use Pot of Acquisitiveness to return that banished monster to the deck.
Some monsters banish themselves to activate their own effects, and there are some effects that require you to banish your monsters to activate. Use Pot of Acquisitiveness to return those banished monsters into the deck and draw a new card.
Returns from your Banished Zone to your Main Deck / Returns from your Banished Zone to your Extra Deck / Returns from your opponent's Banished Zone to your opponent's Main Deck / Returns from your opponent's Banished Zone to your opponent's Extra Deck / You draw cards