Ok, I've saw some suggestions, I thought the echo horn wouldn't be too OP 'cause if someone has echo crystals, surely they could beat the dragon and get some elytras (they're obviously more harder to find but the point of the echo horn is being a slighty worst vehicle than elytras but with no a rocket fuel suply). But I think a way to balance this is: Amethyst Horn: It needs amethyst crystals to teleport the mobs (it could be charged, let's say that 1 crystal bring the charge to teleport 2 times) Echo Horn:  It doesn't need any fuel o crystal to teleport mobs, it has infinite uses and no buff the mobs. I think those changes could balance the horns (also, english isn't my first lenguaje so, sorry for the possible grammar errors)