You may sacrifice only creatures that are already on the battlefield. If a creature with devour and another creature are entering under your control at the same time, the creature with devour can't devour that other creature. The creature with devour also can't devour itself.
If multiple creatures with devour are entering under your control at the same time, you may use each one's devour ability. A creature you already control can be devoured by only one of them, however. (In other words, you can't sacrifice the same creature to satisfy multiple devour abilities.) All creatures devoured this way are sacrificed at the same time.
You may choose not to sacrifice any creatures for the Devour ability.
Last observed on Scryfall 2 months ago at $3.69. Over the trailing 90 days the price moved between $0.02 and $3.70 across 57 observations. Cross-checked across TCGplayer, eBay sold, Cardmarket EU, and Star City.
This printing is one of 3 catalogued treatments from ALA — the lineup includes Foil and Nonfoil alongside the standard finish. Across our catalog the Rarix library tracks every variant in the same family so collectors can compare price, scarcity and demand inside a single lineage.
Card #140 of *Shards of Alara*, the set that shipped alongside the October 2008 Shards of Alara release.
Card type: Creature — Fungus, color identity green, printed at rare. Rares occupy the bottom-of-pack rare slot in standard boosters. Mana cost: {3}{G}{G} (5 converted). Keyword abilities: Devour.
Legal in Modern, Legacy, Vintage, and Commander.
EDHrec ranks this card #2,133 in Commander, putting it in the niche-pick tier of the format's playable pool.
Illustrated by Raymond Swanland. Rarix catalogs 886 other cards credited to this artist.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Raymond Swanland
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
The number of Saproling tokens created by the triggered ability is based on the number of +1/+1 counters on Mycoloth, not on the number of creatures Mycoloth devoured. It doesn't matter where the +1/+1 counters came from.
