Ulmull, Spore Haven

Defender, Lifelink
Ulmull, Spore Haven enters the battlefield with
a +1/+1 counter on it.
At the beginning of your upkeep, put {x} 1/1
Plant creature tokens into play where {x} is the
number of +1/+1 counters on Ulmull, Spore
Haven then proliferate.