insect deck mtg commander Any tips for an insect-themed commander deck?

Whenever you cast a Dog spell, create a 1/1 green Cat creature token

(To populate, create a token that's a copy of a creature token you control.)

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These on theme cards will work towards increasing your decks synergy, which just means the cards you have will do more when used together with other cards that are working towards the same goal. Ramp + Draw Rather than go into the weeds for each of the categories mentioned previously, well keep it high level and focus on why you should try to meet these targets

As poison counters steadily climb to ten, your enemies succumb one by one to The Serpent Society's lethal embrace