Seymour

"Full Life" — You don't pay mana the first time
you cycle or deliver each turn.

Antediluvian — When Seymour dies, exile it and create "Seymour's Fossil" an artifact token that has
"{t}: Add one mana of any color to your mana pool."

"I had Seymour till he was three. That's when I
knew him and that's when I loved him. I'll never
forget him. But he forgot me a long, long time ago."
—Fry