024td0558o055aa0659e035c6035c9065ca018pn
A simple georesonator based rush with stall. It can probably use some tweaking but the theme is there.
I went with spiders because they are a good compromise on cost and stats.
Large enough to not be easy otyugh fodder but low cost enough to get rolling in decent time.
Many variants and addins are possible. E.g. Stoneskin for longevity vs larger opponents, mix up creatures (add dragons maybe?) etc.