Cheapest priced copy (Secrets of Strixhaven Commander): $0.59 at Card Kingdom, near mint, their price list as of .
Mycoloth 
Creature — Fungus · 4/4 · Rare · Shards of Alara · #140
Devour 2 (As this creature enters, you may sacrifice any number of creatures. It 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 this creature.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
10 printings · $0.59 to $20.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Shards of Alara | 140 | Rare | $1.79 | $10.99 |
| Commander 2015 | 192 | Rare | $1.29 | — |
| Commander 2016 | 158 | Rare | $1.79 | — |
| Commander Anthology | 129 | Rare | $1.99 | — |
| Planechase 2012 | 68 | Rare | $1.79 | — |
| Planechase Anthology | 68 | Rare | $1.79 | — |
| The List | CMA-129 | Rare | $0.69 | — |
| Secret Lair Drop | 1136 | Rare | $17.99 | $20.99 |
| Secret Lair Drop (Cordyceps Rat King) | 2205 | Rare | $2.29Out of stock | $3.99 |
| Secrets of Strixhaven Commander | 276 | Rare | $0.59 | — |
4 rulings from Wizards of the Coast
- 1 October 2008If 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.
- 1 October 2008You 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.
- 1 October 2008The 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.
- 1 October 2008You may choose not to sacrifice any creatures for the Devour ability.