In my opinion, even without Forrest, the situation is clear: hydras are better, because their piercing power is higher + Dragon Fly Hives are easy to take, and Griffin Conservatories as well. For example, I used hydras in 90% of games when I wanted to, starting from my first online match. With hydras, considering Tazar's armor-piercing ability, you can break through fast guards, Death Knights, Town Portal, etc., while with cows this always results in losses. On the third [month], 5 hydras are already an argument. By the way, it's interesting how to take a third [town] with native growth for the Swamp, say if there's no Earth Magic. :D :D Especially without vases on the first [week].

If playing on a 4-minute [timer], it's of course hard to make hydras.

When you build hydras, you always aim to take Dragon Utopias in the second week.