Name:Hunting Grounds
ManaCost:G W
Types:Enchantment
T:Mode$ SpellCast | ValidCard$ Card | ValidActivatingPlayer$ Opponent | TriggerZones$ Battlefield | Execute$ TrigChangeZone | OptionalDecider$ You | Threshold$ True | TriggerDescription$ Threshold — As long as seven or more cards are in your graveyard, CARDNAME has "Whenever an opponent casts a spell, you may put a creature card from your hand onto the battlefield."
SVar:TrigChangeZone:AB$ ChangeZone | Cost$ 0 | ChangeType$ Creature | ChangeNum$ 1 | Origin$ Hand | Destination$ Battlefield
SVar:Picture:http://www.wizards.com/global/images/magic/general/hunting_grounds.jpg
Oracle:Threshold — As long as seven or more cards are in your graveyard, Hunting Grounds has "Whenever an opponent casts a spell, you may put a creature card from your hand onto the battlefield."