Drill Ground

The Drill ground gives you a basic bonus on recruitment time at the castle of outpost it is built in, hence letting you recruit faster (+125% faster at maximum level). For further increasing the recruitment speed (temporary) you may have a +600% feast.

Cost for Drill Ground
Level Rubies cost Recruitment speed bonus
11,500 +25%
213,500 +50%
317,500 +75%
424,000 +100%
535,000 +125%