Eden, Goddess of Adaptation

As long as your devotion to green and blue is less
than eight, Eden isn't a creature.
When a creature gains +1/+1 counters, destroy
target nonland permanent an opponent controls.
When a creature loses +1/+1 counters, add {u}{g} to your mana pool. Spend this mana only
to cast Adapt abilities.
"Do not conform to the adversary. Adapt."