When using Chandelure's "Spirit Burner" attack, can I place any discarded Stage 1 or Stage 2 Pokemon directly onto my bench?
Yes, you can. However, because of the order of this attack, you cannot put a Prism Star card onto your Bench.
Source: Unified Minds FAQ (2019-07-19), TPCi Rules Team (2019-08-01)

Relevant cards

Note: All applicable cards may not be listed below.
SM11_30
SM11_30