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What upgrade do you choose for Centaurs and Shamans, and why?
I choose War Centaurs because they have more armor and good melee attack. Centaurs are large creatures, so they are easy to protect, and the ability to escape doesn't always help.
As for the Shaman Daughters of the Earth, their ability to attack a slowed enemy without retaliation seems better to me than shooting lightning.
Which upgrade do you think is better?