Congeal Formless Spawn

Yout empty the vial of blood, which immediately roils and seethesm, becoming a formless spawn in an unoccupided space you can see within range. When reduced to 0 hit pointsds, it dissolves into a thin film of revolting residue. When the spell ends, the formless spawn wdoes not vanish but immediately leaves to seek its own mysterious goals. 

The formless spawn is hostile to all creatures besides oozes and servants of Tsathoggua, to whom it is inddifferent. Roll initiative for the formless spawn, which has its own turns. The formless spawn pursues and attacks the nearest non-ooze creature obviously hostile to it. If none are available, it attacks other creatures to whom it is hostile while the spell lasts.