I played a couple games with the Dreamer, 3 Teddies, and a Doppelganger at GenCon. I was able to get this going several times and it worked nicely.
Dreamer Activates:
0: I can fly
1: Walk 7" towards target
0: Cast Inflict Dreams on target
1: Casts Frightening Dream to bring out a nightmare but most importantly triggering All My Friends dropping 2-3 Teddies within 4-6 inches of each other on the table and placing Lord Chompy Bits in the center of them preferably in melee with the target. (you're looking at a 14-16" threat range here depending if you want to go teeth or claws)
Chompy Activates:
1: Attacks target that now has a negative flip to the defense thanks to inflict dreams. If you have any Rams in your hand, use them so you can attack again using Onslaught.
+1 Melee Expert: Attack using a book to cheat specifically for the trigger. Use a soul stone to raise your value in case its a low card but you want to trigger All Done after the attack is resolved. So the Dreamer comes back at the end of the activation.
This usually killed my target and left the Dreamer nice and snug between several Teddies for Shadow Form. The following round I would try to repeat the above but this time casting Calm Dreams instead of walking.
Also another idea for when the squishy nightmares come out (particularly Alps) is holding back on casting Inflict Dreams and instead triggering Night Terrors when the Dreamer comes back into play right after Chompy does his thing. The terror/slow checks should aid nicely in keeping the kid alive.