Surge to Victory

If you cast a spell "without paying its mana cost," you can't pay any alternative costs. You can, however, pay additional costs, such as kicker costs. If the card has any mandatory additional costs, you must pay those.

Copying the card doesn't cause magecraft abilities to trigger, although casting the copies does.

If the spell you cast has {X} in its mana cost, you must choose 0 as the value of X.