Marked Cards
Tournament Rules section 423 — 4 rules. From Riot's Tournament Rules for sanctioned events, last updated October 9, 2026.
- 423.1.
- Players are responsible during competitions to make sure their cards and/or sleeves are not marked.
- 423.2.
- Marked is defined as bearing something that makes it possible to identify the card without seeing its face.
- 423.3.
- If cards are sleeved, they should be inspected for marking while in the sleeves.
- 423.4.
- Judges may ask players to remove sleeves or replace any specific sleeve at any time during a competition.