Thanks for your replies, i was almost losing hope ^^
OK about pends, i had just those 3 when I built this deck. Also, i'll add in some soul catchers, didn't think at all about them, and they absolutely fit in. I could even place them instead of the bone pillars since then my death quanta generation would come from cats+SC.
I can't remove fractal at all, because the gist of this deck is to swarm your field with cats to quickly build your bone wall. Without fractal, the wall generation would be slow, and so I would become weak against CC on cats (since without fractal they are few) and to a quick creature spamming that could eat all my bone wall before I cant make it grow. ANd for that reason I can't really do anything to entropy pendulums, since each turn I would consume 1
for each cat to trigger their death effects (obviously I would stop when my BW stacks are a lot and I can be immune to damage for the rest of the duel, but still the wall setup mustbe fast).
I'll add in a couple of lobos aswell, since i saw i'm weak to momentum.
EDIT: Taking into account your suggestions and after a few tries against AI3, i've come up with this:
Hover over cards for details, click for permalink
4vc 4vc 4vc 4vc 4vn 4vq 4vq 4vq 4vq 4vq 50u 50u 50u 50u 50u 50u 50u 52k 52k 52r 52r 52v 52v 542 542 61u 61u 622 622 6u7 71b 71b 80i 80i 8pu
Maybe i could remove the death pends in favor of one more soul catcher (and another vulture).