"Bottomless Trap Hole" is a Trap Card that works well in almost any Deck. It does more than just destroy a monster, it removes a monster from play when it is Summoned.
Removing it from play ensures that your opponent will not be able to Special Summon it from the Graveyard later in the Duel. "Bottomless Trap Hole" only works against monsters with 1500 or more ATK points, so having 3 copies in your Deck may be too many. You do not want to have one and not be able to activate it because your opponent is only Summoning monsters with low ATK's. Try playing with 1 or 2 copies of "Bottomless Trap Hole", and if your opponent is using only low ATK monsters, switch them with cards in your Side Deck for the second Duel of the Match. This can be a very effective strategy.