Massza, the Continuous

If one or more +1/+1 counters would be put on Massza, the Continuous, twice that many +1/+1 counters are put on it instead.
Whenever another creature dies, you may pay {b/g}. If you do, put a +1/+1 counter on Massza.
When Massza dies, you may move any number of +1/+1 counters on it onto any number of creatures you control.