Goblinslide
Enchantment
Whenever you cast a noncreature spell, you may pay 
. If you do, create a 1/1 red Goblin creature token with haste.
Goblins, like snowflakes, are only dangerous in numbers.
Illustrated by
Khans of Tarkir#109UncommonEnglishLegality
Rulings
Sep 20, 2014
You make the decision whether to pay as the ability resolves.