This card's second effect sometimes can benefit your opponent, so be careful when using it against Decks such as "Lightsworns", "Bujins", Zombies, Chaos and "Lavals".
Use "Jar of Avarice" after using this card's milling effect.
This card works well in a "Vampire" Deck; it can be Summoned using "Vampire's Curse", "Vampire Grace" or "Il Blud", most monsters in that Deck are DARK and its effect can trigger the effect of "Vampire Kingdom". Furthermore, since the "Vampire" Deck already has a milling component this card can help deliver the final blow to make your opponent lose due to Deck out.
This card works well against "Exodia"/"Forbidden One" Decks, as it'll force them to mill 5 cards from the top of their Deck, which will mostly likely stop their strategy and chances to gather the 5 pieces together if they milled a piece of "Exodia".