- This card can be searched via "Sangan", "Last Will", "Witch of the Black Forest", "Magician's Circle", "Mystic Tomato", "Dark General Freed", "Gravekeeper's Recruiter" and "Gravekeeper's Spy".
- Use this card's effect on "Spirit Reaper", "Cloudians", or "Berserk Gorilla". They will be destroyed, causing a replay and possibly a direct attack.
- This card is probably the most important of all the Gravekeeper's monsters. Gravekeeper's monsters tend to have low ATK for their level, and even with "Necrovalley", seldom break 2000 ATK--but many high-level monsters have DEF disproportionate to their ATK and are easily destroyed when shifted to Defense Position by this card. Alternately you can use it to easily destroy highly defensive monsters like "Destiny Hero - Defender" and "Labyrinth Wall", and cause damage at the same time.
- Though it is mostly just a deck filler, you can get an extra card out of using "Guard Penalty" by using this card.
- You can use this card to switch an opponent's "Blackwing" or "Lightsworn" monster to Defense Position, preventing them from using "Blackwing - Kalut the Moon Shadow" or "Honest" to save their monster.
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