Lisburne Capsized

(Lisburne Capsized is colorless and has "{t}: add {u} or {b} to your mana pool".)
At the beginning of your upkeep, create X colorless Gold artifact tokens with "Sacrifice this artifact: add one mana of any color to your mana pool", where X is the number of creatures you control plus 3.
At the beginning of your end step, sacrifice a creature. If you control no creatures, you lose 1 life for each Gold token created this turn instead.