Goblin Shaman

Whenever this creature attacks, create a Treasure token.

Kamigawa: Neon Dynasty Tokens

Fable of the Mirror-Breaker // Reflection of Kiki-Jiki

(As this Saga enters and after your draw step, add a lore counter.)
I — Create a 2/2 red Goblin Shaman creature token with "Whenever this token attacks, create a Treasure token."
II — You may discard up to two cards. If you do, draw that many cards.
III — Exile this Saga, then return it to the battlefield transformed under your control.

Treasure

{T}, Sacrifice this token: Add one mana of any color.