Are triple sleeves legal in Riftbound tournaments?

Ruling: Triple sleeves are allowed in Riftbound tournaments as long as all cards have the same number of layers and the sleeves cannot be used to mark cards.

Nuances:

• If triple sleeves are loose in the outer sleeves and allow cards to be tucked left or right, they will be considered as marking cards and you'll be asked to remove them
• All sleeved cards must have the same number of layers
• The tournament rules document doesn't explicitly state a maximum number of sleeve layers