Use a Warlock or Hunter and blink jump to escape the crystal chamber shield. Kill the first sword bearer before your fire team exits the chamber and a second sword bearer will spawn allowing your team to attack Crota with TWO SWORDS. You can also just use this technique to one down Crota before your team exits the main building.
-
Can you get 2 swords simultaneously ? If you don't pick up the sword and wait for your team to clear the rooms, will the 2nd swordbearer spawn, get killed, and both swords can be picked at the same time ?