- If any race can make -IFE -ISB +NRSE work, it's the tri-immune HE. Mini-colonisers with the Settler's Delight are simply amazing. Not only do they get decent fuel efficiency, but as ramscoops generate fuel per engine and fuel pod mini-colonisers are so incredibly cheap, you can quite cheaply use fleets of them to generate all the fuel your transports need out of thin air.