To remake the obsidian pillars in the End

We need to recycle the obsidian pillars. The columns are very monotonous. They are easy to hit and destroy the crystal. And they look too boring and the same type. You need to recycle them so that it is more difficult to hit them and destroy the crystal. For example, with an interval of 15 seconds, the 3 largest pillars on the island will direct their beam directly at the player, simultaneously blinding him. The blinding effect will last for 10 seconds. This will complicate the battle with the edge dragon, because you will have to use different tactics in order to climb the pillars. And make the Central island a little more beautiful. The pillars themselves must be indestructible by either the player or the dragon before killing the boss. They will be protected from destruction by glowing obsidian (from Minecraft Bedrock). Now this block will become a full-fledged part of the game. After killing the dragon, it will no longer be as bright (level 5 light) as it was when the dragon was alive (level 15 light), and will be permanently available for destruction. It will be possible to return its light level to the maximum by turning it on using the Redstone signal. You can use different End material blocks to create a new look for the columns