Yae Miko, Narukami Guuji

Whenever an instant or sorcery you cast deals
damage to an opponent, create a fox spirit
enchantment token. (up to three tokens of this
type may exist at a time)

When you deal 10 or more damage to an
opponent in one turn, you may cast Lightning
Bolt from outside the game without paying its
mana cost, and copy it for each fox spirit token
you control, damage dealt this way cannot be negated.