Meteorite

When this artifact enters, it deals 2 damage to any target.
{T}: Add one mana of any color.

Roxanne, Starfall Savant

Whenever Roxanne enters or attacks, create a tapped colorless artifact token named Meteorite with "When this token enters, it deals 2 damage to any target" and "{T}: Add one mana of any color."
Whenever you tap an artifact token for mana, add one mana of any type that artifact token produced.

When Meteorite enters the battlefield, it deals 2 damage to any target.
{T}: Add one mana of any color.