When recycling cards in Riftbound, do you choose the order of cards or must it be random?

Ruling: When recycling runes, you can choose the order. When recycling main deck cards, the order must be random.

Nuances:

• In competitive events, you typically must offer your opponent the option to shuffle the recycled main deck cards
• In casual settings between friends, you can just mix them up a few times since you're unlikely to see those cards again in the game