[Kameron8]

When a target is under the effect of Menov's Fang, you can refresh the 'Poison' debuff at any point (The Menov's Fang debuff will not refresh, of course). If you re-inflict poison on a target who has 1 turn left on the Menov's Fang debuff, the 4th damage instance of Menov's will not be applied. That is to say, the 4th iteration of poison damage will do 10% of the target's health, not Menov's 20%.

In case this is unclear, here is a hypothetical scenario:

Round 1
Spooky Hexer casts Wretched Oil.
Madeup Person takes 20 darkness damage.
Madeup Person takes 20 earth damage.
Madeup Person has been afflicted with Poison!
Spooky Hexer casts Menov's Fang.
Round 2
Madeup Person takes 20% of their health Poison damage.
Round 3
Madeup Person takes 20% of their health Poison damage.
Round 4
Madeup Person takes 20% of their health Poison damage.
Spooky Hexer casts Wretched Oil.[/b]
Madeup Person takes 20 darkness damage.
Madeup Person takes 20 earth damage.
Madeup Person has been afflicted with Poison!
Round 5
Madeup Person takes 10% of their health Poison damage.

If the hexer in this scenario had not recast wretched oil on round 4, the damage on round 5 would have also been 20%, like usual.