Altar Of Mending

The Altar of Healing is a storage and healing block that can be used to store tools or any items that have durability, when placed, It will be out of power, fill it up with amethyst shards to power it, insert 4 amethyst shards to fully power it, once it is fully powered, right click the altar with any item that lost durability and the item will be held there, once the item is inserted, the item will begin healing itself, if it is fully repaired, the amethyst shards will vanish and you need to insert 4 amethyst shards again to fully power it.

You can speed up the healing by placing an end crystal 5 blocks near it, once you place an end crystal, the end crystal will direct its beam to the altar, every end crystal speeds up the process by 5%, up to 4 end crystals can boost it.

Recipe: glowstone in the middle, Amethyst Shard above the glowstone, copper to the left, right, and below the glowstone