Ere Tick (Stirge)

Adapted from the Pathfinder monster Stirge, that can be summoned using the spell Summon Nature's Ally I.
The Ere Tick is an insectoid creature with two pairs of bat wings, a tangle of thin legs and a needle-sharp proboscis. As a blood-drinker, it latches onto its prey, draining the lifeforce as it drinks.
Ere Tick Powder
Source Ere Tick
Harvest Knowledge (arcana) DC 11
Yield 1 dose; Price 25 gp; Weight
Removing the needle-like proboscis of an Ere Tick and grinding it into a fine powder is not a difficult process. Adding a single dose of Ere Tick Powder to an injury poison decreases the potency and lowers the save DC by 1. However, any creature that fails its initial save against the poison suffers from 1 point of bleed damage in addition to any effects the poison normally has. The bleed damage continues until stopped, even if the effects of the poison have ended.