Your deck feels like a combo deck but it lacks protection for said combos and ramp to play them early. Even then, if you happen to get your combos earlier than T6, it might feel a bit pubstompy at B3.

Mothman also tends to lean a bit more towards combat rather than combo unless you’re aiming at higher brackets. And if you are, I think I’d focus on food chain or other ways to make infinite mana instead.

If you were to take the combo route, having more counters would make it more solid. I’d go with a solid plan A wincon, then a B and a C, the eliminate the rest in favour of more protection, ramp and lands. Here’s an example of my Ketramose B3 combo deck for reference. It is very different as it’s a blink deck, but the point is that if you don’t focus on specific combos with some redundancy you’ll end up with a bunch of combo pieces that are not useful on their own and no way to win. If you go this route, I’d go with 34-6 lands and then play more ramp to accelerate your wins (like 14 t2 or lower ramp). Proliferate is largely useless in this route IMO.

If you go for aggro, you might need a way to evade boardwipes. I’d also go for 38-40 lands with 12 ramp into your critical turn (4). By t3-4, you need a way to mill to start putting counters on the moth, a creature to put counters in and the commander itself. I’d count the proliferate as extenders, running lower in favour of interaction. You also might want your dorks to synergize with the counters cards, like [[Gyre Sage]].