Frieren, Gacha Addict

While Frieren, Gacha Addict is in the
command zone, roll 2d6 on your upkeep.
You have no maximum hand size.
If the results of the die are not doubles, draw X cards, where X is the result of the roll.
If the results are doubles, create X 1/1 Mimic artifact creature tokens, where X is the result
of the roll.
Mimic creatures you control have: "{t}: Add
one mana of any color to your mana pool."