SCP-990, Dream Man

Hexproof
when SCP-990 enters the battlefield, put 10 doom counters on SCP-990. This creatures power is
equal to the amount of doom counters on the battlefield
Remove a doom counter when any player draws a creature card.
When SCP-990 has no more doom counters on it, create a Devastation Nears enchantment with only
1 time counter on it instead of X time counters.