Dmillz's 1H Molten Strike Volcano Build (Invasion easy) - 1.1.3

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Fearmonger wrote:

You're close but not exactly. Damage increases are always applied simultaneously and only once, whereas in your example you're applying them at two different points and therefore inaccurately increasing their effectiveness. Here's the correct calculation (I'm going to assume when you said "melee damage" you really meant "melee physical damage"):

Base physical damage: 1000 phys
Added fire adds 30% of physical as fire damage: 1000 phys, 300 fire
Molten Strike converts 60% of physical to fire: 400 phys, 900 fire
Damage increases are applied, the physical damage is increased only by the melee physical damage, whereas the fire damage was converted from physical so it benefits from both:
400 phys * (1 + 100/100) = 800 phys
900 fire * (1 + 100/100 + 30/100) = 2070 fire
Total damage: 2870

Note how this is about 9% lower than the way you did your calculation.

So for fun, here's the same calculation but adding in Weapon Elemental Damage support:

400 phys * (1 + 100/100) = 800 phys
900 fire * (1 + 100/100 + 30/100) * (1 + 59/100) = 3291.3 fire
Total damage: 4091.3

And adding in avatar of fire:

Base physical damage: 1000 phys
Added fire adds 30% of physical as fire damage: 1000 phys, 300 fire
Molten Strike + Avatar of Fire converts 100% of physical to fire: 1300 fire
Damage increases are applied, while the attack is pure fire it also benefits from physical damage increases since all of the damage originated from physical:
1300 fire * (1 + 100/100 + 30/100) * (1 + 59/100) = 4754.1 fire
Total damage: 4754.1

So with just 20/0 Weapon Ele Dmg support and Lava Lash you get an effective gain of 16.2% from taking Avatar of Fire. This is increased by the fact that your damage is no longer mitigated by armour, but decreased by the targets fire resistance (although this is a double-edged sword because you can also increase your damage substantially against 0 fire resist mobs via Flammability).