Kana, The Thousand Flashes

Whenever you cast an instant or sorcery, you may
pay {1}. If you do, Kana, The Thousand Flashes
deals damage to any target for each instant or
sorcery spell you have casted this turn.
{w}{u}{r}: Return target instant or sorcery with
converted manacost of 4 or less from your
graveyard to your hand.
Repetitions will make you better and better.