Look in theory, for Murmillo to work, you need exactly one point in any of the skills effected by the Cassis Crista attributes.Lv 1 Umbo Blow has 117 damage, lv 16 has 516, a total loss of 399 damage.
CLICK - PROBABLY WRONG INFO
Now if you calculate the maximum loss:
399+100% Umbo Blow attribute = 798
798+330% High Guard attribute = 3431.4
3431.4+400% Cassis Crista attribute = 17157
17157+100% Slithering attribute = 34314
34314+100% High Kick = 68628
68628+50% Headbutt = 102942 lost damage
Butterfly is simmilar, as you only lose 506 base damage by leaving it at lv 1:
(3x506)+100% Butterfly Attribute = 3036
3036+150% Cassis Crista attribute = 7590
7590+100% Slithering attribute = 15180
15180+100% High Kick = 30360
30360+50% Headbutt = 45540 lost damage
You could argue to level up Butterfly to lv 5, because it’s only 4 points difference, but, DO NOT level Umbo Blow / Rim Blow past 6 points (but you can learn the high guard attributes and use a skill reset potion to leave both skills at lv 1). The point of Murmillo is a high base weapon, which you are going to have at some point if you play long enough.
https://forum.treeofsavior.com/uploads/default/optimized/3X/d/1/d1611967b3474838005f0af2b2a0b609ec317c8f_1_405x500.png
If you can grind two million silver per day it is possible to transcend that weapon to stage 10 in less than 6 months (which is nothing in terms of MMOs), but don’t forget attributes cost money too. Take that base of 6,000 and add another 500 from STR into the previous equation:
6500+100% Umbo Blow attribute = 13000
13000+330% High Guard attribute = 55900
55900+400% Cassis Crista attribute = 279500
279500+100% Slithering attribute = 559000
559000+100% High Kick = 1118000
1118000+50% Headbutt = 1677000 damage
DISCLAIMER: I am not exactly sure how the last 3 debuffs stack, because I don’t know if Slithering and High Kick get added together as base+200% or are they multiplied by each other (base+100%)+100%). If all three debuffs are somehow added together, you are looking at 978250 damage, but still, 14 points for additional 102942 damage seem kinda wasteful.