Kicker {R} and/or {W} When Thornscape Battlemage enters, if it was kicked with its {R} kicker, it deals 2 damage to any target. When Thornscape Battlemage enters, if it was kicked with its {W} kicker, destroy target artifact.
2017-03-14
If Thornscape Battlemage is put onto the battlefield as the result of a spell or ability, there's no opportunity to kick it.
2017-03-14
Kicker costs don't change a spell's mana cost or mana value.
2017-03-14
You can pay any particular kicker cost only once. You can't pay it multiple times to get multiples of either triggered ability.
2017-03-14
You choose whether to kick a spell as you cast it, and you pay that much along with the spell's mana cost at the same time. Kicking a spell is always optional.