Web Trick

You gain the ability to conjure a length of web that is 30 ft as a bonus action. At the upper end of the web, an invisible entrance opens to an extradimensional space that lasts until another strand is cast.  When another web is cast or the spell ends, the web falls to the ground.

You can choose to either move or attack with the web when you use this ability.  

Move: If you choose to move, as a part of your bonus action, you can swing to anywhere in a 30 ft radius from the point your web ends in.

Attack: If you choose to attack, as an action, you can attempt to ensnare a foe in sticky webbing.  They must make a dexterity saving throw or be restrained.  After failing their save, the creature may attempt to free themselves with their action, making a strength saving throw against Spell DC