Stirges are flying, bloodsucking parasites. One alone is a pest, but a flock of them constitutes a threat, and this is how they’ll nearly always be encountered.
Their Strength is pitiful, but their Dexterity is high. This makes them hit-and-run attackers, or rather hit-and-fly attackers, since they waddle along at a laughable 10 feet per turn but fly at a brisk 40. With a Wisdom of only 8, they’re indiscriminate in their target selection, attacking whoever comes closest to them; and with a barely cognizant Intelligence of 2, they know only one way to attack and stick with it regardless of circumstances.
This attack revolves around the use of their Blood Drain feature. Starting from a position in the air above its victim, a stirge dives down to bite with its mosquito-like proboscis. If it hits, it latches on. At the start of each subsequent turn, if its victim hasn’t yanked it loose, it automatically drains another 1d4 + 3 hp from him or her. Keep track of this number for each stirge individually, because once it’s drained 10 hp from its prey, a stirge is sated, and it detaches and flies away at normal speed (potentially incurring one or more opportunity attacks as it departs). (more…)