So, can we get a box dropping critter that fills the void between resuscitants and assassins?

One was mentioned a while back where there was discussion of toning assassin boxes down, but I don't recall the name. Apparently it didn't make it as a permanent critter.

Definitely need a box dropping critter to fill that 750-900 gap to make assassins less painful. For now, I'll just stick to young wyverns and dillos while sadly leaving locksmithing by the wayside.