Tips for Tower events are here.
Startbonus: 125 coins
Collections: 600 coins every 8 hours Total: 5525
For collecting times check this.
Ghoul #975 (3 pieces)
Panther #542 (4 pieces)
Psychic # 872 (4 pieces)
Shield #1164 (4 pieces)
Sword #1163 (at the top)
Special Rewards :
Orbs of Raven Dragon (Heroic) or gems or food. This is in different chests for everyone. It works like treasure hunt. You have to open a special number of chests to find the orbs.
Orbs of Sword Dragon.