You can't chump-block him forever, since you'll eventually run out of chumps
It's debatable whether this and other populate spells belong on the list since most of them don't actually creature their own tokens to get started with
Back Sephiroth, One-Winged Angel Legendary Creature - Angel Nightmare Avatar Flying Super Nova - As this creature transforms into Sephiroth, One-Winged Angel, you get an emblem with "Whenever a creature dies, target opponent loses 1 life and you gain 1 life." Whenever Sephiroth attacks, you may sacrifice any number of other creatures
We have some equipment here for powerhouses that pumps their power that also will make sense on him too
You can activate it an arbitrarily large number of times to guarantee you get at least 10 won coin flips for Chance Encounter
If an effect changes under whose control a token would enter the battlefield, that effect applies after Chatterfang's effect is able to be applied