Horror’s Least is obtained from The Corrupted Nightfall Strike in Destiny 2, so you need to run that Nightfall when it’s in rotation to farm it.

Where it drops

  • It’s a 540 RPM Arc Pulse Rifle.
  • The weapon is tied to The Corrupted Nightfall Strike as its source.

Practical farming note

  • Nightfall weapons usually come from completing the featured Nightfall activity, with better chances on higher difficulty runs.
  • If you’re specifically hunting a strong roll, repeated Nightfall clears during The Corrupted week are the route to take.

Quick answer

Run The Corrupted Nightfall while Horror’s Least is in the loot pool.

html

<table>
  <tr><th>Weapon</th><th>Source</th></tr>
  <tr><td>Horror's Least</td><td>The Corrupted Nightfall Strike</td></tr>
</table>