When targeting a unit with Deflect using Orb of Regret, do you need to pay the Deflect cost even though Orb was already played previously?

Ruling: Yes, you must pay the Deflect cost when Orb of Regret targets a unit with Deflect, regardless of when Orb was originally played. Whenever a spell or ability targets a unit with Deflect, the Deflect cost must be paid.

Nuances:

• For triggered abilities that target (where you didn't choose to trigger them), you can decline to pay the Deflect cost, which removes the trigger from pending and prevents it from resolving.