Dealing with Hydras

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Like K said, if you're a turn away from Thau-4, then Terror is great, especially if your skelly spam is holding the Hydras.

Each hydra can kill one square of skellies a turn, but the hydras are unlikely to all be in a line. Don't be skimpy with your mages, you need a lot of spam.

If you have to choose between Evok-4 and Thau-4, I'd go for the blade winds. Summon Lammashtas is also an option. They are PR 100%, and may decide to fly over to attack the commanders. If the hydras chased the Lammashtas to the read, it could be pretty much a disaster for Pythium. So if you've got Conj-3 already, then you've got to decide between Conj-4, Evok-4, and Thau-4.

Plague is Thau-7. And I'd be leery of using that with non-undead on my own side.

Bring some blindfighters to the battle on Guard Commander, enough to make sure you don't auto-route when all your PD gets killed.

[Omnirizon]

In CBM, plague is Thau-4. I think it may be useful, but only as a little bit of constant tick damage.

I've already got the Lammashtas, and was considering using them. Bladewind is probably ideal for this situation too, but is so fatiguing.

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I meant Bladewind for the Cyclops only, not for your Necros. An E9 Cyclops can cast 3 or 4 before worrying about wiping out your own skelly spam, if everyone's at the back.