According to Mike Silagadze, ether.fi is offering EF Devcon attendees in Argentina a 20% cashback on everything purchased using the ether.fi card during the event (source: Mike Silagadze on X, Nov 17, 2025). He also highlighted a free asado perk included with the same campaign (source: Mike Silagadze on X, Nov 17, 2025). No additional eligibility rules, caps, or timeframe were disclosed in the post, so the confirmed terms are the 20% cashback on all purchases via the ether.fi card and the free asado for EF Devcon attendees in Argentina (source: Mike Silagadze on X, Nov 17, 2025).