I typed up a whole reply then lost it ;P
Basically there were many changes in the first few months and everything you linked is from late 2001 - 2002 and later. Some of the changes included huge increases to the boss HP's etc. Since we are not going with the initial weaksauce ToV bosses there is no reason not to change the spells. I already changed the fire AOE's last month for this reason, I just forgot about the cold AoE's. They were likely changed at the same time. There is a 1000 PBAOE spell that still exists with the same name that is unused, which gives behind the scenes evidence that it was changed.
Here are some of the references to the original spell:
February 2001:
http://web.archive.org/web/200106020...shtml?zone=116
http://web.archive.org/web/200203011....shtml?id=6318
As far as resists, even the
easy one with no resist mod hit 70% at 150+ resists. If you add the -100 resist check that can be directly translated to 70% hit chance at capped resist for the harder AoE. If the resist code is changed it will not include changing the spell files, since these are known values, it would be rebalanced in the code upgrade itself. All in all, I have no idea what you are pushing for on resists. Do you think you should be resisting more or less? No matter how high your resists were there was always a chance of getting hit by even the lesser AoE's.
Here is the mid 2001 spell data after the first set of changes I'm going to be using that show the original spell resist mods.
Rain of Cold
2: Decrease Hitpoints by 300
Recast Time: 12
Resist: Cold Resist Adjust
-100
AE Duration 7500
AE Range 300
Interruptable: Yes
Target Type: PB AE
Spell Type: Detrimental
Duration: Instant
Cast by other: Someone Calls forth a circle of frozen shards above you.
Cast on you: Frozen shards slice into your skin.
Wave of Cold
1: Decrease Hitpoints by 350
Recast Time: 12
Resist: Cold
AE Range 200
Interruptable: Yes
Target Type: PB AE
Spell Type: Detrimental
Duration: Instant
Cast on you: A blast of cold freezes your skin.
Cast on other: Someone 's skin freezes.
Wave of Heat
1: Decrease Hitpoints by 200
Recast Time: 8
Resist: Fire
AE Range 200
Interruptable: Yes
Target Type: PB AE
Spell Type: Detrimental
Duration: Instant
Cast on you: A blast of heat sears your flesh
Cast on other: Someone 's skin sears.
Rain of Molten Lava
2: Decrease Hitpoints by 300
Recast Time: 12
Resist: Fire Resist Adjust
-100
AE Duration 7500
AE Range 200
Interruptable: Yes
Target Type: PB AE
Spell Type: Detrimental
Duration: Instant
Cast by other: Someone calls forth a circle of lava above you.
Cast on you: Lava sears your skin.
Flame Jet
1: Decrease Hitpoints by 100
Recast Time: 8
Resist: Fire
AE Range 150
Interruptable: Yes
Target Type: PB AE
Spell Type: Detrimental
Duration: Instant
Cast by other: Someone breathes a jet of flame.
Cast on you: Your body is engulfed in a jet of flames.
Acid Jet
1: Decrease HP when cast by 50
2: Decrease Hitpoints by 20 per tick
Recast Time: 8
Resist: Poison
AE Range 200
Interruptable: Yes
Short Buff Box: No
Target Type: PB AE Spell
Type: Detrimental
Duration: 3.0 mins @L1 to 5.0 mins @L2
Cast by other: Someone breathes a jet of acid.
Cast on you: Acid begins to eat at your flesh.
Thunder Blast
2: Decrease Hitpoints by 75 per tick
3: Decrease Mana by 75 per tick
Recast Time: 8
Resist: Magic
Range: 200
Interruptable: Yes
Short Buff Box: No
Target Type: Single
Spell Type: Detrimental
Source: Live 12/19
Classes: None
Duration: 1 ticks @L1 to 6.5 mins @L65
Cast by other: Someone sets loose a torrent of lightning.
Cast on you: Your body is electrified as the lightning strikes you.