Can you use Heedless Resurrection to kill a unit and then play that same unit from your trash?

Ruling: No. You cannot use Heedless Resurrection to kill a unit and then resurrect that same unit from your trash.

Sequence:

• Step 2 (Make Choices): When playing Heedless Resurrection, you must choose a unit from your trash as the target. At this point, the unit you intend to kill is still on the board and not yet in the trash, so it cannot be a valid target.
• Choices are locked in and cannot be changed (Rule 355.15).
• Step 4 (Pay Costs): You then pay the additional cost by killing a friendly unit, moving it to the trash. However, because the target was already locked in during Step 2, you cannot retroactively choose the newly killed unit.

Nuances:

• The finalization process requires targets to be chosen before costs are paid, preventing this interaction.
• A unit must already be in your trash to be a valid target for "a unit from your trash."