CyPeH
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But on horseback, pardon, his highness looks even more ridiculous.
It's not fitting for a preacher to engage in combat on horseback! He should inspire his comrades with the word of God, standing heroically behind them!
So, the issue here is purely aesthetic... It's better to play with a variety of smaller units than with large, monotonous ones (although the appeal of special abilities is very tempting).