Venusaur, the Solar Bloom

When Venusaur enters the battlefield, search
your library for a forest card and put it onto the battlefield tapped.
Each creature who has been dealt damage by Venusaur, the Solar Bloom is poisoned.
Leech Seed—{1}{g}{g}: Target creature gets a seed counter. Venusaur gets +0/+1 for each creature
with a seed counter.