WHAT MONSTERS TO USE? If you build a Deck with a theme, such as a Gravekeepers Deck, you will be playing with many monsters of the same Type, Spellcaster-Type in this case. Usually, this works well because most Field and Equip Spell Cards increases a specific Type's ability, but this strategy can also make you vulnerable to cards like "Tribe-Infecting Virus" that can destroy all monsters of a declared Type just by discarding one card. Consider these things when you create your own well balanced Deck. - click here for another Dueling Tip.