Name:Custody Battle
ManaCost:1 R
Types:Enchantment Aura
K:Enchant creature
A:SP$ Attach | ValidTgts$ Creature | AILogic$ Curse
S:Mode$ Continuous | Affected$ Creature.AttachedBy | AddTrigger$ TrigCustodyBattlePhase | Description$ Enchanted creature has "At the beginning of your upkeep, target opponent gains control of this creature unless you sacrifice a land."
SVar:TrigCustodyBattlePhase:Mode$ Phase | Phase$ Upkeep | ValidPlayer$ You | Execute$ TrigGainControl | TriggerZones$ Battlefield | TriggerDescription$ At the beginning of your upkeep, target opponent gains control of this creature unless you sacrifice a land.
SVar:TrigGainControl:DB$ GainControl | Defined$ Self | ValidTgts$ Opponent | TgtPrompt$ Select target opponent | UnlessCost$ Sac<1/Land> | UnlessPayer$ You
DeckHas:Ability$Sacrifice
Oracle:Enchant creature\nEnchanted creature has "At the beginning of your upkeep, target opponent gains control of this creature unless you sacrifice a land."
