Program: 112860
Project: 112860
Buggy source:
/** 
 * Use the card on the given target Deals 1 damage to three random enemy characters.  The characters can repeat.
 * @param thisCardIndex The index (position) of the card in the hand
 * @param playerIndex The index of the target player.  0 if targeting yourself or your own minions, 1 if targeting the enemy
 * @param minionIndex The index of the target minion.
 * @param boardState The BoardState before this card has performed its action.  It will be manipulated and returned.
 * @return The boardState is manipulated and returned
 */
@Override protected HearthTreeNode<BoardState> use_core(int thisCardIndex,int playerIndex,int minionIndex,HearthTreeNode<BoardState> boardState,Deck deck) throws HSInvalidPlayerIndexException {
  if (playerIndex == 0) {
    return null;
  }
  if (minionIndex > 0) {
    return null;
  }
  int numMissiles=3 + boardState.data_.getSpellDamage(0);
  int numTargets=boardState.data_.getNumMinions_p1() + 1;
  int index=0;
  while (index < numMissiles) {
    int targetIndex=(int)(numTargets * Math.random());
    if (targetIndex == 0 && boardState.data_.getHero_p1().getHealth() > 0) {
      boardState.data_.getHero_p1().takeDamage((byte)1,1,targetIndex,boardState,deck);
      ++index;
    }
 else     if (targetIndex > 0 && boardState.data_.getMinion_p1(targetIndex - 1).getHealth() > 0) {
      boardState.data_.getMinion_p1(targetIndex - 1).takeDamage((byte)1,1,targetIndex,boardState,deck);
      ++index;
    }
    if (boardState.data_.getHero_p1().getHealth() <= 0) {
      break;
    }
  }
  Iterator<Minion> iter=boardState.data_.getMinions_p1().iterator();
  while (iter.hasNext()) {
    Minion targetMinion=iter.next();
    if (targetMinion.getHealth() <= 0) {
      iter.remove();
    }
  }
  return super.use_core(thisCardIndex,playerIndex,minionIndex,boardState,deck);
}

Fixed version (ground truth):
/** 
 * Use the card on the given target Deals 1 damage to three random enemy characters.  The characters can repeat.
 * @param thisCardIndex The index (position) of the card in the hand
 * @param playerIndex The index of the target player.  0 if targeting yourself or your own minions, 1 if targeting the enemy
 * @param minionIndex The index of the target minion.
 * @param boardState The BoardState before this card has performed its action.  It will be manipulated and returned.
 * @return The boardState is manipulated and returned
 */
@Override protected HearthTreeNode<BoardState> use_core(int thisCardIndex,int playerIndex,int minionIndex,HearthTreeNode<BoardState> boardState,Deck deck) throws HSInvalidPlayerIndexException {
  if (playerIndex == 0) {
    return null;
  }
  if (minionIndex > 0) {
    return null;
  }
  int numMissiles=3 + boardState.data_.getSpellDamage(0);
  int numTargets=boardState.data_.getNumMinions_p1() + 1;
  int index=0;
  while (index < numMissiles) {
    int targetIndex=(int)(numTargets * Math.random());
    if (targetIndex == 0 && boardState.data_.getHero_p1().getHealth() > 0) {
      boardState.data_.getHero_p1().takeDamage((byte)1,0,1,targetIndex,boardState,deck);
      ++index;
    }
 else     if (targetIndex > 0 && boardState.data_.getMinion_p1(targetIndex - 1).getHealth() > 0) {
      boardState.data_.getMinion_p1(targetIndex - 1).takeDamage((byte)1,0,1,targetIndex,boardState,deck);
      ++index;
    }
    if (boardState.data_.getHero_p1().getHealth() <= 0) {
      break;
    }
  }
  Iterator<Minion> iter=boardState.data_.getMinions_p1().iterator();
  while (iter.hasNext()) {
    Minion targetMinion=iter.next();
    if (targetMinion.getHealth() <= 0) {
      iter.remove();
    }
  }
  return super.use_core(thisCardIndex,playerIndex,minionIndex,boardState,deck);
}