Ok, this thread is a continuation of my gripe about the guardian units being able to leave a city.

step one in strategy: moderate city spam 

you just need a quick 5 or 6 outposts to start this off

step two:

get a city to level up to 2, pick guardian unit then sell the hut

step three: build the hut in another city and repeat.

step three: use these quickly gained units to bum rush your neighbouring ai's

This can still be effective against  hard and challenging ai's since lv 3 guardian units can be strong enough to provide decent support to your heroes when it come to beating up their armies (i picked a lv 3 guardian by accident once and got some mace guy with 19 attack and 4 defence)

they whole point of this strategy is that the numbers of units you can build through this method and the quality of them (random quality) is superior to what you would be able to get at quickly through working your way up the warfare tree and civ tree to provide equipment and materials to build them.

so i repeat.

1) city spam

2) guardian unit spam

3) bumrush

4) victory.

 yeah. ai hasn't got a chance.