Special Summon this card by the effect of "Summoner Monk", then activate this card's effect to add your Accelerator card. Afterwards, you can:
Xyz Symmon "Daigusto Emeral" to not only return your 3 "Scattershots" from the graveyard to your deck, but also draw.
Xyz Summon "Lavalval Chain" and place "Scattershot" on top of your deck. This would mean that you already have a "Blaze Accelerator Reload", so be sure to activate it during your opponent's turn (if you can) to get the "Scattershots" more quickly.
Return this card and your 3 "Scattershots" from your graveyard to your deck by the effect of "Royal Firestorm Guards", AND draw 2 cards.