If anyone is looking for a Guild, this one is amazing.
#16 and the only official requirement is 400k Gold. You get so many chests, all guild tasks and usually one (or two) legendary tasks and those provide gold or glory themselves.
Practically speaking, assume 500k gold but like I said you get a lot just from opening chests and buying the Troop of the week.
Also with all the souls you get you can max out your kingdom stars as far as level goes if you’re not up to 3 stars (or more) on all 27.