NPC Spawn Issue: a forsaken revenant -> Staff of Elemental Mastery: Earth (2001)

[Kirdan]

Plane of Hate was changed March 14th, 2001. The new loot tables had "Staff of Elemental Mastery: Earth" dropping off of Magi P`Tasa as well as the male "a forsaken revenant".

Nothing you have linked shows earth staff dropping off of male revs before 2003, so I don't know why you state this or think "nobody knows for sure". Yes, we do know for sure. The 2001 revamp made it easier to get all the old Inny epic quest drops relative to the old PoH because Inny 1.0 was really hard for most people to access.

Plane of Hate was revamped again in 2003. It became an XP zone with a typical respawn timer and new tiers of minibosses, new trash mobs over lvl 60, Marsinger quests, etc. That's when all the old epic quest drops were moved to old trash mobs.