The original block will be dropped and can be picked up as normal Setblock command is definitely a tool that players can use to have some fun in Minecraft Bedrock Edition.

In this tutorial, you’ll learn how to create a realistic laser security entrance using Redstone, tripwires, and optional command blocks for visual effects and damage.

There is a command called "dialogue," which is exclusive to Minecraft Bedrock and a specific mob that is available in it. Though one may find this code's advanced features slightly tricky to use ...