When do you choose the battlefield for Bullet Time - upon putting it on the chain or on resolution?

Ruling: You choose the battlefield when putting Bullet Time on the chain (during finalize), not on resolution.

Sequence:

• Put Bullet Time on the chain AND choose the battlefield
• Players have a chance to react
• Bullet Time resolves: pay the runes and deal damage

Nuances:

• Paying runes and dealing damage happens on resolution, but battlefield selection happens earlier during finalize