Sonin, Untouchable Lawmage

At the beginning of your upkeep or when Sonin,
Untouchable Lawmage enters the battlefield, if it
doesn't have a hexproof counter on it, remove all
indestructible counters from it and put a
hexproof counter on it.
At the beginning of your upkeep, if Sonin,
Untouchable Lawmage has a hexproof counter
on it, remove all hexproof counters from it and
put an indestructible counter on it.