On my mesmer Cat mage he has scavenger runes which grants an extra 20% poison duration. https://wiki.guildwars2.com/wiki/Superior_Rune_of_Scavenging
On his staff he has a Superior Sigil of doom. https://wiki.guildwars2.com/wiki/Superior_Sigil_of_Doom
If I add another sigil of doom doom to his torch on his other weapons set. (scepter torch.) Could I have an unending circle of dumping poison on enemy players in wvw to nerf their healing abilities?