Please bear in mind there is an ANNOYING glitch associated with this deck.
If your opponent has 2 cards remaining in their deck and your Hiro or Warm Worm is activated, they will NOT deck out and lose. They just discard their remaining 2 cards and you do not receive the deck-out win until their following draw phase or until a second Hiro/Warm Worm is activated while they have 0 cards remaining.
I've lost so many games because of this glitch x.x
I also have no idea if it still glitches if Hiro/Warm Worm is activated while your opponent has 1 remaining card in their deck.
It's not a glitch, it's the mechanics. A deck out is achieved when there are insufficient card(s) to fulfill a draw condition. Warm worm sends cards to the graveyard vs. Hiro forcing the opponent to draw card(s). Similarly, GHQ will not cause a deck out victory while a cup of ace can.
Econ is a must in this deck because Sargent electro, barrel dragon and mirage dragon screw this deck over really hard. Sac worm, gain control of one of those three creatures and use assault on ghq to get rid of them.