This was suggested in the past, I just have actual ideas for it. Also you are refunded the stuff used on the altar. 1. Throwing a forgery chain piece on the altar makes you witness the combination of the az, ek, ni, uth, and tol runes activate a nuclear bomb and create the forgery. You are disguised as an ancient. 2. Throwing a Fallen Factory key on the altar brings you to the past to see the factory go rogue and attack the corkians. You fight bots in this one. 3. Throwing either scythe, ethereal, maelstrom, or chakram will bring you to the events of Bob getting trained by one of the four masters. The master you witness depends on the weapon you used. Also for the Mael training you are disguised as a wayward spirit. 4. Throwing any of the wybel items (including the borange fluff) on the altar will transport you to a wybel spaceship going to Wynn. You are disguised as a wybel and actually can listen to them this time. They are talking about how they will colonize the world and take its resources when suddenly their ship malfunctions and they are sent on a crash course. 5. Throwing a tol rune on the altar will send you to the time when the collosi were being built, so we can finally find out who built those things. 6. Throwing a security key from the guards in Letvus Airbase will send you back to the rebellion of Cinfras. In this one you are disguised as a villager and you also have to fight things because it is, well, a rebellion. 7. Throwing the Sans dagger will send you to a white void and at the other end is Therck, Master of the Stairs. He has 10000000000 health and cannot be killed. The entire fight is a bullet hell and at the end Therck gets very angery and starts spamming charge and explode until he self destructs and drops the Therck Chain, a piece of leggings that works well in rainbow builds. This entire thing is a joke and would be a very fun easter egg.