Secret Lair Drop

Mycoloth

Devour 2 (As this enters, you may sacrifice any number of creatures. This creature enters with twice that many +1/+1 counters on it.)
At the beginning of your upkeep, create a 1/1 green Saproling creature token for each +1/+1 counter on Mycoloth.

The List

Commander Anthology

Devour 2 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with twice that many +1/+1 counters on it.)
At the beginning of your upkeep, create a 1/1 green Saproling creature token for each +1/+1 counter on Mycoloth.

Planechase Anthology

Devour 2 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with twice that many +1/+1 counters on it.)
At the beginning of your upkeep, put a 1/1 green Saproling creature token onto the battlefield for each +1/+1 counter on Mycoloth.

Commander 2016

Commander 2015

Planechase 2012

Shards of Alara

Devour 2 (As this comes into play, you may sacrifice any number of creatures. This creature comes into play with twice that many +1/+1 counters on it.)
At the beginning of your upkeep, put a 1/1 green Saproling creature token into play for each +1/+1 counter on Mycoloth.