Wait, I don't quite follow how you can get more dead Masq hits by using Golem or Native Village. When you Golem into Masq, you need to both not have any cards in hand and not have any cards in the deck or discard pile to not pass any cards... which means that you can only play one Masq. If you use Native Village, you can reduce your handsize, but you can still only play one Masq.
The only ways I can think of playing a Masq multiple times in a turn that yields no cards in hand and no cards in deck or discard are TR, KC, and Outpost. Maybe I'm missing something obvious?
Well take the simple case: I have a hand consisting of golem, KC, hamlet, masq, masq. I hamlet away a masq and a KC for actions. Play the golem, now I can KC the dead masq left in hand 3 times and play the other masq (pulled by the golem) once dead for a net kill of 4 cards.
This still isn't enough for a true pin, but with a strong enough draw engine, some villages, and a hand reducer attack (margrave and ghost ship being particularly nice, but it can even work well enough with something like cutpurse), it can be game over regardless of the point spread.
Another shot is a hand reduction attack (e.g. militia), a draw engine, a discarder (e.g. hamlet, secret chamber), golem, masq, and native villages. So you draw your entire deck and discard golem, masq, masq, and a copy of your discarder. Now you play 4 NVs in a row and place those 4 cards on the mat. Play your hand reduction attack (opponent has 3 cards), discard a NV and a masq, and then play through the rest of your deck till you have nothing left in hand except a golem. Play golem then a dead masq, then bring everything from the mat back to hand. Opponent has two cards which you can kill by discarding two masqs and goleming them.
Obviously working without TR or KC is much more difficult than having either of them, but it can be done. I'd avoid trying to set this up unless there is some great engine factory and I've already fallen way behind in normal scoring (e.g. opponent has 3 colonies to my 0), but it is a marginally viable Hail Mary when you lack any other option. Even with possible substitutions, I'd say this is around a 2.5 card combo and is rare enough that I work with it more for the fun of figuring out how to do it rather than it being dominant.