The Larval Beast Lord

Trample Menace
At the beginning of your upkeep you get X poison
counters where X is the power and toughness of
The Larval Beast Lord minus the number of cards
in your graveyard, then exile half X cards from your graveyard rounded up
Behold the Larval Beast Lord in its nascent form!
Even in its infancy, this terror defies comprehension, hinting at a doom that few can fathom...
- The Fall of St. Lux