Name:Glassworks
ManaCost:2 R
Types:Enchantment Room
T:Mode$ UnlockDoor | ValidPlayer$ You | ValidCard$ Card.Self | ThisDoor$ True | Execute$ TrigDamage | TriggerDescription$ When you unlock this door, this Room deals 4 damage to target creature an opponent controls.
SVar:TrigDamage:DB$ DealDamage | ValidTgts$ Creature.OppCtrl | TgtPrompt$ Select target creature an opponent controls | NumDmg$ 4
AlternateMode:Split
Oracle:(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)\nWhen you unlock this door, this Room deals 4 damage to target creature an opponent controls.

ALTERNATE

Name:Shattered Yard
ManaCost:4 R
Types:Enchantment Room
T:Mode$ Phase | Phase$ End of Turn | ValidPlayer$ You | TriggerZones$ Battlefield | Execute$ TrigAllDamage | TriggerDescription$ At the beginning of your end step, this Room deals 1 damage to each opponent.
SVar:TrigAllDamage:DB$ DamageAll | ValidPlayers$ Player.Opponent | NumDmg$ 1
Oracle:(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)\nAt the beginning of your end step, this Room deals 1 damage to each opponent.
