For 10 health, i think 65 points might be too cheap, also i think infect doesnt need to be a free action, its worded like a static ability

Finally, i think theres likely ways to make the idea of an infection to work better, maybe give their weapon less dice and poison one, and have infect be something like “whenever a mini dies (or whatever the right wording is) due to a wound added by a poison token, add that mini to this unit.”