When you make a world all players will be given cool movement activators.

To dash at the speed of fast: select the "Dash" item in your hotbar and crouch to briefly have the Speed effect

To phase through walls: select the "Phaser" item in your hotbar and jump into a wall to enter Spectator mode shortly

To jetpack into the sky: select the "Jetpack" item in your hotbar and crouch to soar to the skies. To go down: look down

To ride any mob: select the "Ride" item in your hotbar and punch the mob you want to ride