Tiger Shrine

Add a jungle variant called Tiger Jungle where neutral tiger mobs with a lot of health and damage spawn and only attack you if you attack them. Make a rare structure called Tiger Shrine where waves of tigers come at you but if you attack them you lose a lot of durability so you have to give them some kind of potion to pacify them, giving XP in the process and revealing hidden chests with tiger loot. When you pacify all the tigers you open a hidden door where a boss tiger awaits. You must then defeat the boss tiger with a special tiger potion made from the loot from the chests. If you kill the tiger you get a terrible effect, but when you use the potion you can ride it and use it like a horse, but stronger and capable of damaging mobs.