The hydra is quite punishing with its 3x3 attack, especially against unarmored mages (which I tend to be, because he likes to dissolve armor). It is hard to put up blocking creatures because he will drop essence drain on it. The hydra itself is difficult to kill with its high health, regen, and COUNTERSTRIKE.
The combination is not unbeatable, and the hydra is particularly weak against a mage with lots of strong attack spells or a finite life enchant. But hydras do well against swarms (because of counterstrike and regen) and hit hard if teleported into position.
Though it isn't the best creature by far, I still rate it as an excellent spell because it is one of the best creatures for what it does (hit hard when not required to move).
...Agony completely destroys the Hydra's power. One curse and he's now rolling 1 die three times... on the flip side bear strength only adds to the first attack.
Its getting so old with the "agony destroys hydra"
Who runs hydras? Wizards.
Who has close to unlimited access to metamagics that handles enchantments? wizards.
How many rounds are you gonna let your hydra do 1x1x1? 1 maybe 2 if your pressured.
If you play grizzly with your wizbro and it gets an agony are you gonna get rid of agony? yes - so why not remove it from hydra also?
The only difference is that grizzlys 1 round attack with agony will actually still do damage, where is the hydras 1 round with agony will do close to 0.
But then again.... the Hydra servers another purpose than the grizzly.
Its like the good old Gorgon... Because Gorgons are no longer the new black, alot of spellbooks dont even run purify anymore. I wouldnt be surprised if alot of spellbooks dont run agony either.