Cheapest priced copy (Murders at Karlov Manor): $2.49 at Card Kingdom, near mint, their price list as of .
Insidious Roots 
Enchantment · Uncommon · Murders at Karlov Manor · #208
Creature tokens you control have "{T}: Add one mana of any color."
Whenever one or more creature cards leave your graveyard, create a 0/1 green Plant creature token, then put a +1/+1 counter on each Plant you control.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
2 printings · $2.49 to $3.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Murders at Karlov Manor | 208 | Uncommon | $2.49 | $2.49 |
| Murders at Karlov Manor | 313 | Uncommon | $2.99 | $3.99 |
2 rulings from Wizards of the Coast
- 2 February 2024If multiple creature cards leave your graveyard at the same time, Insidious Roots's last ability will trigger only once.
- 2 February 2024In the rare case where Insidious Roots is a creature token, it will grant itself the ability "{T}: Add one mana of any color."