Mechamaru, Cursed Puppeteer

Whenever you cast your first instant or sorcery spell each turn, you get an amount of
{e} equal to its mana value.

At the beginning of your upkeep, create a 1/1 Cursed Construct artifact creature token with "This creature gets +1/+1 for each {e} you have"

Pay {e}: Add two mana of any color. Spend this mana only to cast instant or sorcery spells