Blessing from down below + Abomination + drained Isn't Working

I have my Ugat paired with Blessing from down below, and Drained on another monster, the ugat attacks, causing stats gained, triggers of abomination, and then a trigger of Echolocation. The abomination triggers unto the Ugat, causing stat gains, which then causes stat losses unto the enemy, the Drained trigger never happens on these drains/stat loses.