This Pandora's Box can only be played when an opponent activates an effect that Searches for or Casts a card from their deck. Negate that effect and that opponent must send the top 2 cards from their deck to their Underworld.
| Detail | Value |
|---|---|
| Card type | Rune |
| Element | Omni |
| Element cost | Omni,Omni |
| Rune type | Counter |