User blog:Magnetic Shock/How to know if that x3 attack is worth it

If you have participated in any conquest-type event, I'm sure you've come across the little box with the "x3 attack" under the "start conquest" button. Here's how to tell if it's worth the Spirit Water.

A common misconception is that the x3 attack multiplies your damage by 3. This is untrue, as it multiplies your daemons' attack, which is a different variable.

Let A = the ATK of some number of cards (full team if you can survive two hits)

Let D = the damage reduction of the boss

To find D (which varies depending on the number of daemons in your team that you choose to consider), simply subtract the total damage dealt by a certain number of daemons from the sum of their ATK stats. Eg. you attack with 10 cards, calculate D using the sum of ATK on those 10 cards - the damage they deal to the boss. Understandably, this only applies directly to the current boss, but can be used to estimate the damage reduction of bosses around that level. For the sake of the below calculation let's assume you can survive two hits and attack with 10 cards. Also assume negligible non-full-team damage.

Let n be some integer where n = number of times you can send your full team when your spirit is full

If you use SW to refill spirit after attacking normally then attack again,

Damage = 2n(A-D) = 2nA - 2nD

If you use SW for a x3 attack then attack as normal after,

Damage = 3A - D + (n-1)(A-D) = (n+2)A - nD

Therefore 3x attack is more efficient if:

nD > (n-2)A

This is just a general guideline to understanding the concept of x3 attack and is by no means exact or accurate, as values used for D are estimates at best and subject to variation.

Do inform me if this can be improved or I have made some calculation error! :)