Wrath of Nature was always -100 resist check. Most of the lucy recorded history data starts at 2002 and the initial entry was probably not correct.
This shows the first few initial data just setting the stats for the spell.
<------- All the 2002 data is from lucy initially setting values.
Wrath of Nature
2002-03-07 11:32 Initial Entry
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2002-06-05 11:20 Changed SpellIcon from to
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2002-06-12 12:27 Changed Unknown130 from 0 to 100
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2002-09-04 11:33 Removed Slot 2: Decrease Movement by 11% (L1) to 62% (L52)
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2002-09-26 11:10 Changed Resistadj from 0 to -100
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2002-10-21 11:05 Changed 'Cast on other' message from " has been gripped by natures wrath." to " has been gripped by nature's wrath."
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2002-10-21 11:05 Changed 'Cast on you' message from "You are gripped by natures wrath." to "You are gripped by nature's wrath."
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<Time Gap>
2004-04-28 11:05 Changed Category from to Unknown(-99)
Holy Shock for comparison
2002-03-07 11:32 Initial Entry
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2002-06-05 11:20 Changed SpellIcon from to
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2002-06-12 12:27 Changed SpellIcon from to
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2002-06-12 12:27 Changed Unknown130 from 0 to 100
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2002-07-24 09:28 Changed SpellIcon from to
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2002-09-04 11:33 Changed Resistadj from 0 to -100
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2002-09-04 11:33 Removed Slot 1: Lure(4)
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<Time Gap>
2004-04-14 12:00 Changed Slot 3 from "Stun(1.50 sec)" to "Stun(1.50 sec/61)"
That being said all these epics were in game far before 2002. This is lucy just getting the spell data right.