Killjoy, Captive Coder

Killjoy, Captive Coder enters the battlefield
with 8 Lockdown counters on it.
At the beginning of your upkeep you may
remove a Lockdown counter from this creature.
When all 8 Lockdown counters are removed.
Your creatures gain double strike, deathtouch,
and indestructible as long as this creature
is on the battlefield.