Brood Strength + Size, Various

But it wasn’t their numbers that shocked her. It was the sun. There was sun on the forest floor. With turntimber trees around there was never full sun on the forest floor. But the creatures had managed to do what Nissa had not thought could be done. They’d felled a small turntimber. They’d dug large holes and were in the process of stripping the leaves off the fallen tree, hauling them to the holes, and stuffing them in. And the creatures were not all the kind they’d fought earlier. Some flew and were only masses of floating tentacles with thin and vile arms extending out. Some were tentacled and crawled on the ground with round, white heads that appeared to be made of solid bone and lacked even the slightest face. Some were huge … the size of a stomper and just as thick. Others were the height of three elves, and as she watched one grunted and stood, towering over all the rest.

Zendikar: In the Teeth of Akoum (Magic: The Gathering), Chapter 1