Efficient way to put Destiny HEROes into the graveyard.
Cannot be used if you do not draw any Destiny HERO monsters.
Being able to quickly draw more cards from your deck can help you get to your important cards earlier in the duel. Cards like Dreamer and Malicious are good discard options because they are able to replenish themselves giving you an plus 1 in card advantage. When in the graveyard, Dasher can help you special summon a monster you drawed during your draw phase. Celestial has an amazing graveyard effect that can make you plus 2 when you have no cards in your hand.
After discarding a Destiny HERO with Destiny Draw, you can summon Destiny HERO - Decider to retrieve the Destiny HERO you discarded. Summon Decider would also not be a bad option since he cannot be targeted for attacks by level 6 or higher monsters, making him an excellent wall against decks that spam high-leveled monsters.
Having Destiny HERO monsters in your graveyard could also be beneficial for other cards' effects. Destiny HERO - Dangerous can gain attack depending on the number of Destiny HERO monsters in the graveyard. Vision HERO -Vyon can banish a HERO monster from the graveyard to search out Polymerization. D - Fortune banishes a Destiny HERO from the graveyard to immediately end your opponent's battle phase. Over Destiny special summons a Destiny HERO from your deck but relies on having a high-leveled Destiny HERO monster in your graveyard to widen it's search options.