Thelon of Havenwood - 238 R TSR

Each Fungus creature gets +1/+1 for each spore counter on it.
{B}{G}, Exile a Fungus card from a graveyard: Put a spore counter on each Fungus on the battlefield.
"The sight of my thallids still thriving is a bittersweet welcome to this cold waste."
rare
Legendary Creature — Elf Druid
From the Magic: The Gathering set Time Spiral Remastered.