Does Dr. Mundo's ability still recycle cards when there are fewer than 3 cards in the trash?

Ruling: Yes, Dr. Mundo recycles as many cards as possible even with fewer than 3 cards in trash. Recycling effects do not target, so they follow "do as much as you can" rules.

Nuances:

• This is specific to Recycling as a keyword - it has a special case for "do as much as you can"
• Mundo doesn't target because it says "recycle three cards" rather than "choose three cards and recycle them"
• Other effects like Annie (requiring cards in trash) work differently and may not trigger if requirements aren't met
• The distinction between targeting and non-targeting in Riftbound can be subtle and depends on specific wording