As an action, you can Conjure 3 Sword's made from the Terrain around you.

you can choose to use one of the swords as a Melee weapon, have all of them float around you to protect the caster or move them on the battlefield

When you use the swords as a melee weapon (1d8), you use your Spell attack modifier for the attack roll.

when the swords are in their Defensive stance(1d8), you can use your bonus action to move them 15ft, if the sword is more then 45ft away from the caster the swords breaks.

if a creature enters one of the sword's melee range, The caster can use their Reaction to make a Melee attack against the creature, the creature can attempt to make the attack miss my making a Dexterity saving throw against the spellcaster's spell save DC.

if you hit the creature the sword it deals the damage but the sword breaks(defensive stance).

you can end the spell by using a Bonus Action to break the swords and make 6 Ranged attacks (2 for each sword) using your spell attack modifier, dealing (1d4) piercing damage for every ranged attack. 

You can have all the swords occupie the same space as the caster and protect them when the caster has an attack roll against them, you roll a 1d6 on a 5-6 the swords take the hit and breaks, and the caster takes no damage.