Do you have to have your main deck on the opposite side of your rune deck?

Question

Accepted Answer

Yes, according to the Tournament Rules for high-level Organized Play (OPL), your Main Deck and Rune Deck must be placed on opposite sides of your board layout.

According to **Rule 508.4** and **Rule 508.5**:
*   **508.4:** "Main Deck and trash must be together on either the left side or the right side of the board."
*   **508.5:** "Rune Deck should be on the other side (right or left) of the board from the Main Deck."

This layout is required in competitive settings to ensure clarity and prevent the accidental mixing of the two decks, as they have different card backs and functions (Rule 128.2). Additionally, Rule 508.2 and 508.3 specify that your Runes must be placed closer to you, while your non-rune cards (units, spells, etc.) must be placed closer to your opponent.