Talk:Earthquake Spell/@comment-25734996-20150825164753

I'm still foggy on the math behind the EQ spell stats against walls. Bear with me as my explaination is a bit lengthy. Let's use a level 1 EQ spell and a level 8 wall for explaining my confusion.

It is clear that 4 level 1 Earthquake spells will destroy level 8 walls. Each spell removes 6% of the remaining hitpoints X 4 against those walls, or 24% of the remaining hitpoints. The level 8 wall has 3000 hitpoints.

First, if the spells worked off of the original hitpoints, 24% * 4 is only 96%. The walls should remain standing with 120 hitpoints. However, the description of the spell states that it only impacts the REMAINING hitpoints. Perhaps the description is inaccurate or misleading, and perhaps there is a rounding piece (each spell actually destroys 6.25% or something like that).

If the description is accurate, however, and the impact is on the REMAINING hitpoints as implied, no number of spells should ever fully destroy the walls. Use the level 1 spell to see what I mean. The first spell should remove 24% of those hitpoints, reducing the remaining hitpoints to 2280.

Since the 4 spells that follow will remove 24% of the REMAINING hitpoints, the next 3 spells would do the following:

Spell 2: 2280 * 0.24 = 547.2; 2280 - 547.2 = 1732.8

Spell 3: 1732.8 * 0.24 = 415.872; 1732.8 - 415.872 = 1316.928

Spell 4: 1316.928 * 0.24 = 316.06272; 1316.928 - 316.06272 = 1000.86528

Carry that all the way out to 11 spells if you want. You still will never reach 0 hitpoints because the number of hitpoints shaken away by the spell is always reduced with each additional spell because you're taking 24% of a smaller number of hitpoints away each time. The math behind the spells is just very confusing in my opinion. I understand that 4 spells kills a wall, no matter what. I just don't see how, and, quite frankly, that bothers me! For someone using the spell strictly to penetrate walls, it seems pointless to ever upgrade the EQ spell unless you have completed all DE upgrades available at your TH level first and just want to spend it on something besides dark troops.