There are several Equip Spell Cards that have the effect of returning themselves to the top of the deck such as "Horn of the Unicorn". Use this to get those cards back into your hand more quickly.
Using "Convulsion of Nature" to flip your deck upside-down will also allow you to guarantee whether or not this card's effect will work for you.
A player could use this card in a Reversal Quiz OTK Deck. Activate "Convulsion of Nature", then activate this card's effect if it is not an Equip Spell. Activate "Reversal Quiz" and call the type of card you just sent to the bottom of your deck.