When you play a spell, when does it register in the discard pile - upon resolution or upon reveal after cost is paid?

Ruling: A spell enters the discard pile just before resolution, as part of the resolution process itself.

Sequence:

• Finalize the chain item
• Execute the card's instructions
• Place the card in the trash/discard pile
• Consider it resolved/played

Nuances:

• The placement in discard happens during the "R" (Resolve) step of FEPR (Finalize, Execute, Pass, Resolve), which is the process for resolving chain items
• The card goes to discard after executing its instructions but as part of the same resolution step