Maybe there's another way to address this issue, aside from OP auto-casts and direct %damage/SP buffs. Has no one considered Spiral Pierce's damage formula?
According to the in-game description, the formula is: [(80% of weapons weight times (100%+level*50%) + (round.down(STR/10^2) + Upgrade Damage) * size modifier (small 125%, medium 100%, large 75%)) * card factors (+20% and such) * element factors ]* 5 hits.
According to the pre-Renewal article on Spiral Pierce on irowiki.org, it's [(weaponweight*0.8*skillmod)+strbonus+weaponupgrades]*damagemodifiers*5 (which is more of the same, just simplified.)
Damage:
Most ATK is not calculated into Clashing Spiral's damage. Things such as Spear Mastery/Weapon Masteries, Andre cards, or base weapon ATK will not add damage. However, weapon upgrades do (the damage they add is not random, such as on normal melee attacks).
Racial/elemental/size cards or items that multiply the final damage by a percentage, such as The Sign, will add damage.
Every 10 STR adds a set amount of damage to Clashing Spiral that can be multiplied by cards, The Sign, or similar items.
Okay, so what are we avoiding, or not likely to happen, or not even happening?
A direct Spiral Pierce damage buff (%damage)
A bigger SP boost. (%SP)
Overpowered auto-casts that have other sources to come from (Coma, Dispell, this thread)
What are our choices in regard to the formula?
Make the weapon from Level 3 to Level 4. This would add a very small, fixed damage boost. According to the description, it's just an additional 10 damage from Level 3. (Lv3 - +15, Lv4 - +25)
Give more base STR bonus. If you would look at the STR bonus/damage chart in this page you would see that additional STR will add 10 more damage on top of the previous damage bonus of your STR. Example would be if I had 100 STR, it gives Spiral Pierce an additional 95 damage. But that's on top of every single STR bonus from 10 STR, 20 STR, 30 STR, and so on, for a total of 500 more damage, and don't forget, multiplied by 5 per hit of Spiral Pierce. While this looks good, we should give back what we ask for, and there's a better bonus for it.
A race/size damage modifier bonus. The current Halberd has +17% damage to Demihumans. We know that it doesn't stack multiplicatively with other Demihuman bonuses, which we get a lot from 2x FBHs already. Maybe changed to size, or race:Non_boss? Not probable, and I'd be against this mostly.This is what I was aiming for:
A weight boost. At the current values, it's at 200 weight. Spiral Pierce calculates in 80% of the weapon's weight in damage. So, if say, we make it 600. That's 3x the current one, which in turn would provide more raw value for the final damage output. What's good about this is you'll be taking away what LKs were given more of in the advent of the Halberd. More weight capacity to carry supplies. 1h Elite LK Spears are at 500 weight. 2h are at 550. They give a lot more of the raw value to the final output than a measly 200 weight. LKs didn't have as much carrying capacity (a lot, but not too much because of multiple spears) when they were massing up 1h Elite Spears. 3 default weapons, you already lost 1500 weight. More if you're a tactical player, lose 500 more per spear you carry. This is good, because the LK Halberd is already a very good weapon (that unfortunately no one knows how to maximize, except a few.) Som has a point, I've seen Aura duel people outlasting every single one of them with 400k HP and a ton of Seeds. If you're gonna give them damage, take away some of their strengths. Make them carry less supplies. Remove the +250 flat SP bonus. You want to get something? Give back something. More damage, make them use their Yggs. Reduce the Yggs they can carry. Now they'll be balanced.
Now it is not up to us to direct what bonuses this Halberd gets. They're the one who can do the testing, and it will be up to them how much it will be increased (not by a lot, mind you, that's why it was lowered to begin with, the initial was too strong.) This Halberd is arguably the most debated weapon, and that comes with some people not maximizing it, some, seeing the finer problems with the weapon in regards to other classes, some, just too impatient to outlast other classes, and so on, so forth, blah blah myriad of reasons.