[Reroll: Prisma Illya Part 2 Update]

Last Updated: 25/9/2026

This document is subject to change. Available through the “… reroll” command.

Refer to #banner-and-event-advice channel for what banners are worth pulling.

Managed by Senshi39 (Any issues, ping me or leave it in #discord-feedback.)

  • If the reroll doc hasn’t been updated while a collab is around, the reroll has likely not changed or I have forgotten/am busy.

The Reroll Guide is maintained by the Grand Summoners Official Discord Advisor Team: https://discord.gg/grandsummoners.

Minimum reroll should have FChloe or SChloe or Imperial Illya. The following banner units are listed in order of importance.

  1. FChloe/SChloe/ImpIllya
  2. Heroic Emya/Shirou/Summer Miyu
  3. Summer Illya/Rin/Summer Luvia

Optimal Reroll

FChloe/SChloe/ImpIllya + Shirou/HEmiya/SMiyu

ArtGen + Secondary ArtGen or Utility Unit

Minimum/Optimal rerolls aren’t the only viable rerolls. Most of the time they serve as guidelines to get you started with a good team, unless banners are so bad there’s only one good reroll. Check with @Advisor & @Provisional Advisor in #reroll-and-team-advice channel if unsure.

WHAT TO PULL

Remember to skip the daily pull and roulette until you’ve finished rerolling.

Note: If starting Crystal count is not enough for steps, go to News (Envelope on Home tab top left), scroll all the way to the bottom, click the links. You can also do Story Mode and quests for more crystals.

Minimum Reroll

  1. Single (5 Crystals): Crossover Prisma Illya Rerun/Rerun Summer/Part 1

If no FChloe/SChloe/ImpIllya → Continue

  1. Multi 10+1 (50 Crystals): Crossover Prisma Illya Rerun/Rerun Summer/Part 1

If no FChloe/SChloe/ImpIllya → Reroll

Optimal Reroll

  1. Single (5 Crystals): Crossover Prisma Illya Rerun/Rerun Summer/Part 1

If no FChloe/SChloe/ImpIllya → Reroll/Continue

  1. Multi 10+1 (50 Crystals): Crossover Prisma Illya Rerun/Rerun Summer/Part 1/Part 2

          If no ArtGen + Secondary Unit → Reroll

Is it a good time to reroll?

Prillya collab has so many units that the reroll is generally quite flexible, any artgen + other utility unit can be considered an acceptable reroll. Do check with the QnA channels if you're unsure of your reroll.

After you get your desired reroll, do a Single (3 Crystals) on Prisma Illya Rerun Equipment to try for Rho Aias

Grab the UOC ticket for 50 Alch Stones from the Alchemist when you can. Refer to this link for more information on the UOC ticket.