BSS06-092-C - Sushi Bullet Train

LVILVII
When one of your token spirits is summoned, you may exhaust this nexus to draw a card.
LVII
When you use a magic card from your hand, you may pay one core from this nexus to activate Feast after its effect resolves: Feast(Summon a Small Supsprite Token. If you already control a Small or Medium one, remove all cores from one, place them into your reserve, and summon the next size token (S -> M -> L) instead.)