Add an EMPTY_HAND helper

Fixes #156

Author: jleclanche

fireplace/cards/blackrock/collectible.py

@@ -45,7 +45,7 @@ class BRM_012:
 
 # Core Rager
 class BRM_014:
-	play = Find(CONTROLLER_HAND) | Buff(SELF, "BRM_014e")
+	play = EMPTY_HAND & Buff(SELF, "BRM_014e")
 
 
 # Axe Flinger
@@ -167,7 +167,7 @@ class BRM_011:
 
 # Quick Shot
 class BRM_013:
-	play = Hit(TARGET, 3), Find(CONTROLLER_HAND) | Draw(CONTROLLER)
+	play = Hit(TARGET, 3), EMPTY_HAND & Draw(CONTROLLER)
 
 
 # Revenge

fireplace/cards/tgt/hunter.py

@@ -16,7 +16,7 @@ class AT_057:
 
 # Brave Archer
 class AT_059:
-	inspire = Find(CONTROLLER_HAND) | Hit(ENEMY_HERO, 2)
+	inspire = EMPTY_HAND & Hit(ENEMY_HERO, 2)
 
 
 # Acidmaw

fireplace/cards/utils.py

@@ -24,6 +24,7 @@ def pick(self, source):
 
 CLEAVE = Hit(TARGET_ADJACENT, Attr(SELF, GameTag.ATK))
 COINFLIP = RandomNumber(0, 1) == 1
+EMPTY_HAND = Count(CONTROLLER_HAND) == 0
 HOLDING_DRAGON = Find(CONTROLLER_HAND + DRAGON)
 JOUST = Joust(FRIENDLY + MINION + IN_DECK, ENEMY + MINION + IN_DECK)