1. Failing forward. If you can fai something and have nothing happening, it’s not PBTA.
2. Moves embedded within conversation/fiction. You are not triggering the mechanic by saying so, but by describing what you are doing. Even though, more often than not, you will state you hack’n slash when you play DW, of course – but you won’t defydanger with your charisma. You’ll describe what you do and we’ll decide whether you’ll trigger a move.
And the optionnal 3. hard and soft success.