If you're going for an Direct Attack OTK, you'll need 27 monsters in your Graveyard (27 * 300 = 8100). However, if this card is Special Summoned (except during the Damage Step), you can use "Inferno Reckless Summon" to summon 2 more copies of this card, and you'll only need 9 monsters in your Graveyard.
One deck strategy is to use a large, possibly overloaded deck filled with nothing but searcher Monsters and this card. This card will power up for every one of your searchers destroyed, and you can use "Mystic Tomato" to Special Summon it once the Graveyard is sufficiently flooded.
This card can be used in conjunction with "Dark Crusader", simply send a vast amount of DARK monsters to the graveyard, powering up "Dark Crusader". If it should be destroyed, this card can serve as a backup, gaining the ATK of whatever monsters were discarded for "Dark Crusader's" effect.