If I move a unit to an open battlefield (initiating a non-combat showdown) and then play Rengar at reaction speed to a different battlefield, can I tap Fresh Beans to draw a card?

Ruling: Yes, Fresh Beans will work in this scenario. When you move a unit to an open battlefield, you initiate a non-combat showdown. Because a showdown is now active, playing Rengar (or any unit) during that showdown satisfies Fresh Beans' trigger condition "When you play a unit during a showdown."

Sequence:

• You perform a Standard Move to an open battlefield
• This creates a contested state and initiates a non-combat showdown
• The showdown creates a window of opportunity where players can play cards and activate abilities
• You play Rengar at reaction speed during this active showdown
• Fresh Beans triggers because you played a unit during a showdown
• You may exhaust Fresh Beans to draw 1 card

Nuances:

• Moving to an open (uncontrolled and unoccupied) battlefield initiates a non-combat showdown, not just combat showdowns
• The showdown remains active as a window of opportunity, allowing reaction-speed plays
• Fresh Beans can trigger on any unit played during any showdown, including non-combat showdowns