Physical Only Damage

<Custom React Effect>
// Check if the damage is positive and if it's a physical action.
if (value > 0 && this.isPhysical()) {
  // Get the living members of the same party.
  var members = target.friendsUnit().aliveMembers();
  // Make an empty group to list affected members.
  var affected = [];
  // We'll go through each member to check them.
  for (var i = 0; i < members.length; ++i) {
    // Getting the individual member.
    var member = members[i];
    // Does the member exist and is the member affected by state 91 (the Joint Penalty state)?
    if (member && member.isStateAffected(91)) {
      // If the member is affected, add it to the affected group.
      affected.push(member);
    }
  }
  // Divide up the damage by how many members are affected.
  value = Math.ceil(value / affected.length);
  // We'll go through each of the affected members now.
  for (var i = 0; i < affected.length; ++i) {
    // Getting the individual affected member.
    var member = affected[i];
    // Ignore the effect if the member is the target of attack.
    if (member !== target) {
      // Let's play animation 12 on the affected member.
      member.startAnimation(12);
      // The affected member takes damage.
      member.gainHp(-value);
      // We'll have the affected member reveal a damage popup.
      member.startDamagePopup();
      // Clear the results of the effect.
      member.clearResult();
      // Next, check to see if the member is dead.
      if (member.isDead()) {
        // If the member is dead, we'll make it collapse.
        member.performCollapse();
      }
    }
  }
}
</Custom React Effect>
Magical Only Damage

<Custom React Effect>
// Check if the damage is positive and if it's a magical action.
if (value > 0 && this.isMagical()) {
  // Get the living members of the same party.
  var members = target.friendsUnit().aliveMembers();
  // Make an empty group to list affected members.
  var affected = [];
  // We'll go through each member to check them.
  for (var i = 0; i < members.length; ++i) {
    // Getting the individual member.
    var member = members[i];
    // Does the member exist and is the member affected by state 91 (the Joint Penalty state)?
    if (member && member.isStateAffected(91)) {
      // If the member is affected, add it to the affected group.
      affected.push(member);
    }
  }
  // Divide up the damage by how many members are affected.
  value = Math.ceil(value / affected.length);
  // We'll go through each of the affected members now.
  for (var i = 0; i < affected.length; ++i) {
    // Getting the individual affected member.
    var member = affected[i];
    // Ignore the effect if the member is the target of attack.
    if (member !== target) {
      // Let's play animation 12 on the affected member.
      member.startAnimation(12);
      // The affected member takes damage.
      member.gainHp(-value);
      // We'll have the affected member reveal a damage popup.
      member.startDamagePopup();
      // Clear the results of the effect.
      member.clearResult();
      // Next, check to see if the member is dead.
      if (member.isDead()) {
        // If the member is dead, we'll make it collapse.
        member.performCollapse();
      }
    }
  }
}
</Custom React Effect>
Certain-Hit Only Damage

<Custom React Effect>
// Check if the damage is positive and if it's a certain hit action.
if (value > 0 && this.isCertainHit()) {
  // Get the living members of the same party.
  var members = target.friendsUnit().aliveMembers();
  // Make an empty group to list affected members.
  var affected = [];
  // We'll go through each member to check them.
  for (var i = 0; i < members.length; ++i) {
    // Getting the individual member.
    var member = members[i];
    // Does the member exist and is the member affected by state 91 (the Joint Penalty state)?
    if (member && member.isStateAffected(91)) {
      // If the member is affected, add it to the affected group.
      affected.push(member);
    }
  }
  // Divide up the damage by how many members are affected.
  value = Math.ceil(value / affected.length);
  // We'll go through each of the affected members now.
  for (var i = 0; i < affected.length; ++i) {
    // Getting the individual affected member.
    var member = affected[i];
    // Ignore the effect if the member is the target of attack.
    if (member !== target) {
      // Let's play animation 12 on the affected member.
      member.startAnimation(12);
      // The affected member takes damage.
      member.gainHp(-value);
      // We'll have the affected member reveal a damage popup.
      member.startDamagePopup();
      // Clear the results of the effect.
      member.clearResult();
      // Next, check to see if the member is dead.
      if (member.isDead()) {
        // If the member is dead, we'll make it collapse.
        member.performCollapse();
      }
    }
  }
}
</Custom React Effect>
All Damage

<Custom React Effect>
// Check if the damage is positive.
if (value > 0) {
  // Get the living members of the same party.
  var members = target.friendsUnit().aliveMembers();
  // Make an empty group to list affected members.
  var affected = [];
  // We'll go through each member to check them.
  for (var i = 0; i < members.length; ++i) {
    // Getting the individual member.
    var member = members[i];
    // Does the member exist and is the member affected by state 91 (the Joint Penalty state)?
    if (member && member.isStateAffected(91)) {
      // If the member is affected, add it to the affected group.
      affected.push(member);
    }
  }
  // Divide up the damage by how many members are affected.
  value = Math.ceil(value / affected.length);
  // We'll go through each of the affected members now.
  for (var i = 0; i < affected.length; ++i) {
    // Getting the individual affected member.
    var member = affected[i];
    // Ignore the effect if the member is the target of attack.
    if (member !== target) {
      // Let's play animation 12 on the affected member.
      member.startAnimation(12);
      // The affected member takes damage.
      member.gainHp(-value);
      // We'll have the affected member reveal a damage popup.
      member.startDamagePopup();
      // Clear the results of the effect.
      member.clearResult();
      // Next, check to see if the member is dead.
      if (member.isDead()) {
        // If the member is dead, we'll make it collapse.
        member.performCollapse();
      }
    }
  }
}
</Custom React Effect>