Kuhra, Terror of Dreadnoth

Kuhra, Terror of the Dreadnoth enters the battlefield with 4 +1/+1 counters on it.
Trample, Reach
{1}{u}: Remove a +1/+1 counter from Kuhra: Put
a shipwreck counter on target creature.
At the beginning of your upkeep, each creature
takes X damage, where X is equal to the number
of shipwreck counters on it.