Play as a Reaver culture, progress your town until you can build the Tier 2 support units (Overseers?) who can subdue units that are currently crowd controlled. Take an army with 2-3 Tier 1 Harriers (or any unit that can stun/immobilize), 2-3 Overseers, and 1-2 strong units to carry the rest of the battle (likely hero/faction leader). Explore ancient wonders with the stack to find a Tier 3 or higher enemy, throw CC on them until one lands then have all your overseers attempt to subdue. If the subdue works, win the rest of the battle without killing the subdued enemy and recruit them after the battle is won. If you can, Mimics are a great target since the unit they'll copy is either a one attack support unit or a Tier 1 unit whose only advantage is a single net attack.