Yep. If you upgrade it past 14 though you can sacrifice the extra champs you get from extra bond drops to reduce the number of sends needed, which lets you gain emeralds as you train.Oracle said:
DJ said champions are great. I said they are not, because the majority of people who enjoy are coiners. Coiners are the ones that get to win champion tournaments, and coiners are the ones that have a complete set of grade 5 champions.
Just to be clear.
I didn't say "champs are great".
I said the new champs related events were much appreciated, because they had turned champs from shop only content for mega coiners to something people could earn in game and therefore anyone active now could aspire to a full set of champs.
I am getting a bit fed up of being constantly misquoted by everyone tbh.
As a side note on the summoning buildings. You only need to get it to lvl 14 to increase the drop rate of bonds to break even (i.e. you won't run out of bonds from continual champs training any more). Lvl 14 is not that expensive and something anyone priotising their free sapphires onto the "right" things can readily achieve.
If you do that and bag all the free emeralds & recharge orbs that are available from events you can run significant champ training for free without costing yourself any emeralds (you can rank 7 a champ in around a month w/o spending money).