Taken from patch notes: “-Continuous-type skills used when equipped with a Toy Hammer will no longer continue to deal ten times the damage.”
At first, I had no idea what it meant. However, it seems that multiple lines of damage (Cafrisun set, Sacrament, Aspergillum, Last Rites) no longer proc Toy Hammer stacks.
The Blessing buff way more than makes up for the dps loss, but I’m bummed out about not having those tiny explosions anymore.
-edit-
It seems that Cure doesn’t proc Toy Hammer stacks as well. I’m guessing it’s the same for other multi-hit skills?

i only got wizs in that account so i can’t test X)