Program: 112881
Project: 112881
Buggy source:
/** 
 * Use the card on the given target The Minion class can have two states: one as a card in the hand, and the other as a minion on the field.
 * @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 public BoardState useOn(int thisCardIndex,int playerIndex,int minionIndex,BoardState boardState){
  if (this.hasBeenUsed_) {
    return null;
  }
  if (playerIndex == 0) {
    if (isInHand_ && boardState.getNumMinions_p0() < 7) {
      if (minionIndex == 0) {
        return null;
      }
      if (!charge_) {
        this.hasAttacked_=true;
        this.hasBeenUsed_=true;
      }
      boardState.placeMinion_p0(this,minionIndex - 1);
      boardState.setMana_p0(boardState.getMana_p0() - this.mana_);
      boardState.removeCard_hand(thisCardIndex);
      return boardState;
    }
 else {
      return null;
    }
  }
 else {
    if (!isInHand_) {
      if (minionIndex == 0) {
        this.attack(boardState.getHero_p1());
        if (windFury_ && !hasWindFuryAttacked_)         hasWindFuryAttacked_=true;
 else         hasAttacked_=true;
        return boardState;
      }
 else {
        Minion target=boardState.getMinion_p1(minionIndex - 1);
        this.attack(target);
        if (target.getHealth() <= 0) {
          boardState.removeMinion_p1(target);
        }
        if (health_ <= 0) {
          boardState.removeMinion_p0(thisCardIndex);
        }
        if (windFury_ && !hasWindFuryAttacked_)         hasWindFuryAttacked_=true;
 else         hasAttacked_=true;
        return boardState;
      }
    }
 else {
      return null;
    }
  }
}

Fixed version (ground truth):
/** 
 * Use the card on the given target The Minion class can have two states: one as a card in the hand, and the other as a minion on the field.
 * @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 public BoardState useOn(int thisCardIndex,int playerIndex,int minionIndex,BoardState boardState){
  if (hasBeenUsed_ && hasAttacked_) {
    return null;
  }
  if (playerIndex == 0) {
    if (isInHand_ && boardState.getNumMinions_p0() < 7) {
      if (minionIndex == 0) {
        return null;
      }
      if (!charge_) {
        hasAttacked_=true;
      }
      hasBeenUsed_=true;
      boardState.placeMinion_p0(this,minionIndex - 1);
      boardState.setMana_p0(boardState.getMana_p0() - this.mana_);
      boardState.removeCard_hand(thisCardIndex);
      return boardState;
    }
 else {
      return null;
    }
  }
 else {
    if (!isInHand_) {
      if (minionIndex == 0) {
        this.attack(boardState.getHero_p1());
        if (windFury_ && !hasWindFuryAttacked_)         hasWindFuryAttacked_=true;
 else         hasAttacked_=true;
        return boardState;
      }
 else {
        Minion target=boardState.getMinion_p1(minionIndex - 1);
        this.attack(target);
        if (target.getHealth() <= 0) {
          boardState.removeMinion_p1(target);
        }
        if (health_ <= 0) {
          boardState.removeMinion_p0(thisCardIndex);
        }
        if (windFury_ && !hasWindFuryAttacked_)         hasWindFuryAttacked_=true;
 else         hasAttacked_=true;
        return boardState;
      }
    }
 else {
      return null;
    }
  }
}