Mystic Mine can be synergic with Ojama Duo and prevent your opponents monster effects and keep you on the control of the game
Other players may have different reasons to keep a large collection of cards, for instance I know a player who tries to collect one of every card thats printed including one of every promo card
The Pokemon card set Ancient Origins is one of the many collectible card sets released by The Pokemon Company International
You can banish 1 "Nemeses" monster from your hand or deck
The rest of the cards are Hope for Escape , Zero Gardna , Swift Scarecrow , Threatening Roar , Waboku , and One Day of Peace , all attainable from repeatedly surrendering to the Seeker Duelist Challenge
This should hopefully be enough to end games, even if you haven't had the best start.