Ana Battlemage

To determine a spell's total cost, start with the mana cost (or an alternative cost if another card's effect allows you to pay one instead), add any cost increases (such as kicker), then apply any cost reductions. The spell's mana value remains unchanged, no matter what the total cost to cast it was.

If a card or token enters as a copy of a permanent, the new permanent isn't kicked, even if the original was.

The second triggered ability targets an untapped creature. If there are no other untapped creatures when Ana Battlemage enters, it must target Ana Battlemage. If the target becomes tapped by the time the ability tries to resolve, the ability won't resolve.