I'll analyze high-finish Bant Airbending Combo decklists from the past 2 weeks in Standard to find the core cards.
Let me query the database directly to get detailed card counts for high-finish entries from the past 2 weeks:
Now let me calculate which cards appear in 95%+ of decks with the same count:
Let me also check what the total deck count is and look at cards with high adoption regardless of count:
Based on analysis of 154 high-finish Bant Airbending Combo decklists (top 8 finishes) from the past 2 weeks in Standard, here are the indisputable core cards that over 95% of decks play:
The absolute locked-in 4-ofs that define the deck: Aang Swift Savior, Appa, Doc Aurlock, Airbender Ascension, Breeding Pool, and Temple Garden.
Data from 45 Standard tournaments over the past 2 weeks: 67% Melee, 33% MTGO. Recent events include Standard Challenge 32, Premier Summer Series TOP 8, and Standard RC Super Qualifier.