Brood Mana Absorption

As Nissa watched, one of the tentacled creatures casually seized a vampire by the neck. It wasn’t done cruelly, exactly. More like an elf might seize a wild fig off the branch. The tentacled creature searched until it found the tube under its right armpit, and it jabbed it into the vampire’s chest. Then the creature squatted and stared down at the ground, while the vampire stood stock still, growing whiter and whiter.

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