fix to bug where Eji's Cunning would crash if used on a spell with no…

… targets

data/cards-minerva.cfg

@@ -689,6 +689,7 @@
 		rules: "Change the targets of a spell that is being cast.",
 		possible_targets: "def(class game_state game, class creature avatar, [Loc] targets) ->[Loc]|null
 			if(size(game_stack) = 0 or not (back(game_stack) is class message.play_card)
+			   or (class message.play_card<- back(game_stack)).targets = []
 			   or (card_being_played = null or card_being_played.type != 'spell'
 			       where card_being_played = (class message.play_card <- back(game_stack)).card),
 			[],