Which monster do you like the most in Heroes 5 (level 4)?

Lizard Riders and Royal Griffins! Both are level 4 units and deserve a gold medal in every Commander's ranks because they often deprive the enemy of important units! And in the hands of an experienced player, they are threat #2 after level 7 units.

I think that threat #2 for humans is not griffins at all, but paladins or angels (depending on who likes what more and how they used training). But griffins can also be used effectively, especially during a castle siege - throw them at archers and set watch on them... and miracles begin to happen - all units try to attack them, since another target is not yet available due to the castle walls, and they also receive anger after the archers' attack, in addition to the mandatory counterattack (endless retaliation of griffins), and also a hit from the hero. The main thing is to have time to resurrect them... Only in this case can griffins be considered threat #2, since paladins are waiting behind the castle walls (if, of course, they are not teleported there, which I always do successfully)...
Therefore, I'm not particularly afraid of griffins, but Lizard Riders in an open field are scary!!!