The Spyglass

This gives you a way to see farther.  Hold the spyglass in your main hand.

Put this command in a impulse (orange) command block un-conditional and needs redstone.

/give @p[c=1] minecraft:glass_bottle 1 0 {HideFlags:31,AttributeModifiers:[{AttributeName:"generic.movementSpeed",Name:"generic.movementSpeed",Amount:-80000,Operation:0,UUIDLeast:719543,UUIDMost:322340,Slot:"mainhand"}],display:{Name:"Spy Glass",Lore:["Lets you ZOOM IN"]}}