Special Summon it to your field, and if you do, all monsters your opponent controls must attack that monster this turn, if able, while you control it
Playing Dredge and having your opponent put a Turn 0 Leyline of the Void is just as much of a non-game as mulliganing to five
Decks that go through a lot of their Extra Deck quickly, such as Zoodiac and Sky Striker, can make great use of Pot Of Avarice to easily put Extra Deck Monsters back into the Deck while drawing cards to maintain advantage
10 Inexorable Tide Inexorable Tide has just one line of text on the card but in that one line, there is tons of potential
Ghost Town, when bounced, serves as another fodder card in your hand you can trade in if need be when using Scroll Rack