REDU format ruling
Harpies' Hunting Ground
Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)All Winged Beast monsters gain 200 ATK/DEF. If any "Harpie Lady" or "Harpie Lady Sisters" is Normal or Special Summoned: The player who conducted the Summon targets 1 Spell/Trap on the field; that player destroys that target.
Rulings
- If you control Harpies’ Hunting Ground on your side of the field, because it is a Field Spell Card, its effects apply to both players. When either player Normal Summons or Special Summons a Harpie Lady or Harpie Lady Sisters to the field, the controller of that newly-Summoned monster is the one who selects 1 Spell or Trap Card and destroys it.
- You can chain to the effect of Harpies’ Hunting Ground that destroys 1 Spell or Trap Card.
- The effect of Harpies’ Hunting Ground that increases ATK and DEF is applied to all face-up Winged Beast-Type monsters on the field, including your opponent’s, because it is a Field Spell Card.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.