RTF is a global modification that replaces all towns in the game.

A tenth is taxes, dragons love gold, and they will be expensive, and will be on Tier 7. I'm hearing for the first time that Keegan's betrayal works both ways, and also that it affects any unit... I thought I removed this ability from the cultists, but I'm not sure, I need to check. Damn, I didn't test Keegan, but I checked a similar hero who changes the effect of an ability - Elaine... she doubles the taxes on peasants in her army... berserkers also pay double taxes.