Farnir, Ever Growing

Farnir, Ever Growing enters the battlefield with a
+1/+1 counter on it. At the beginning of your
upkeep double the number of +1/+1 counters on Farnir, Ever Growing.
{t}, Farnir, Ever Growing gains indestructible
until end of turn.
Farnir, Ever Growing has trample as long as it
has 16 or more +1/+1 counters on it.