If you don't like taking chance, a good way to use this card is to use Mai Valentine's Aroma Strategy, so while you have Marmiting Captain in your hand, you can also see whether the top card in your deck is a monster or not, so you know exactly when to play it.
This card is actually pretty good if you're going for a swarm deck. The A. Forces + Arcana Knight Joker package lets you recycle your Jack's Knights into your deck for later appearances plus the benefit from The A. Forces lets you overpower your opponent easily.