// when hero is dead and removed from play
		public void NullOpponentHero()
		{
			var hero = new EntityBuilder("HERO_01", 0, 30).Hero().Damage(20).ToEntity();
			_player.Add(hero);
			var board = new BoardState(_player, _opponent, _entities, 1);

			Assert.IsTrue(board.IsOpponentDeadToBoard());
		}
		public void IsDeadToBoard2()
		{
			var playerHero = new EntityBuilder("HERO_01", 0, 30).Hero().Damage(20).Armor(8).ToEntity();
			_player.Add(playerHero);
			var opponentHero = new EntityBuilder("HERO_02", 0, 30).Hero().Damage(25).ToEntity();
			_opponent.Add(opponentHero);

			var board = new BoardState(_player, _opponent, _entities, 1);

			Assert.IsFalse(board.IsPlayerDeadToBoard());
			Assert.IsTrue(board.IsOpponentDeadToBoard());
		}