Can you fizzle an opponent's targeting damage spell by moving the targeted unit to your base or to another battlefield as a reaction?

Ruling: Spells cannot fizzle and always resolve on the chain (unless countered). If the targeted unit is moved in response, the spell still resolves but cannot find the target anymore, so the targeting effect does not happen. However, any other effects on the spell (like "Draw 1") still occur.

Nuances:

• If the spell specifies "at a battlefield" (any battlefield), moving to another battlefield does not prevent targeting
• If the spell specifies "here" (specific location), moving to a different battlefield would prevent the effect
• Moving the unit to base prevents the targeting effect regardless of the spell's wording
• The spell resolves and triggers any "when you play" effects even if the target becomes invalid