At the start of your Buy phase, you may spend any number of Favors to trash that many cards from your hand.|
The Peaceful Cult is an Ally from Allies. It allows you to use Favor tokens to trash cards from your hand.
 Official FAQ
- Spend the Favors all at once; then choose all the cards to trash; then trash them; then resolve things that happen due to trashing those cards, in any order.
 English versions
|| At the start of your Buy phase, you may spend any number of Favors to trash that many cards from your hand.
|| March 2022
 Other language versions
|| Friedlicher Kult
|| Zu Beginn deiner Kaufphase darfst du beliebig viele Gefallen einlösen, um genauso viele deiner Handkarten zu entsorgen.
(…) Peaceful Cult trashes. Those are all pretty simple.
 Secret History
Originally it trashed at start of turn. The change was mostly to make it a little more different, but of course also makes it stronger.