Finally Fucking Forty

When Finally Fucking Forty enters, age 10
times {x} years. If {x} is 4 or more, Finally
Fucking Forty enters with 40 +1/+1 counters.
Midlife Crisis {w/b}{w/b}{w/b}{w/b} - Cast Finally
Fucking Forty for its Midlife Crisis cost.
Finally Fucking Forty enters with 40
+0/+1 counters and a Finality counter. During
each upkeep, put a -0/-10 counter on Finally
Fucking Forty.