How to use the Lizzie, Impulse Or Pulsette? sticker
Open the sticker picker in any channel on Opium Pulses and pick Lizzie, Impulse or Pulsette?.
Sending it on other servers or in DMs needs Discord Nitro.
To add it to a server you manage, download it, then open Server Settings → Stickers → Upload Sticker. Discord takes PNG, APNG and GIF files up to 512 KB.