Your house can be used as a bank (Free) , the best prayer, hp, poison, special attack restore in the game that has no cooldown (240mish). Mage Book swap(cost 1.23b pretty useless)
This is the closest stat restore to a bank and teleport.
(The pool doesn't reset your boosted stats)
(none of this content requires any donator ranks)
REQUIREMENTS: 99 Construction.(might be lower) 25m for house, 50m for superior garden, 190mish for ornate pool. For mage book swap altar- 175m for achievment gallery. 1.23B to build the altar (very expensive, not very worth just lets you swap between mage books inside house)
STEP 1: Buy a house for 25m from the estate agent in edgeville
STEP 2: Hire a butler from the estate agent, any of them work as a bank via one of their options. (if invisible run off screen in the house and back and they will be there next to the portal)
STEP 3: Build Superior Garden for 50m
STEP 4: Build Restoration Pool then upgrade it one by one until it is ornate. (Don't drink before fully upgraded or you have to remove and start over)
ORNATE POOL IS VERY OVERPOWERED. It has no cooldown. Restores prayer, hitpoints, special attack, and removes poison. On top of that it DOES NOT lower your boosted stats. (even extreme boosted stats won't be reset to 99)
STEP 5: (not important) If you want the Mage book swap. Build achivement gallery for 175m. Then build occult altar for 1.23B
STEP 6: Rotate your rooms so when you teleport in you are facing the pool to make it extremely fast to use. To rotate them, just go outside of the room and click build on its doorway.
Side note: To get to house you can use the teleport in the normal spellbook or house teleport tabs. (unobtainable on irons atm) You will appear directly next to your butler using these teleports.
Also Just understand that a lot of the stuff in the house does not work(at the time of this post) and is very expensive. The pool and altars do work though.
THEN ENJOY THE MOST OVERPOWERED THING A NON DONER CAN OBTAIN.