Just let this iconic guy lie
Your main line of play is to ramp early with Sapphire glimmers like Belle, gaining access to more cards and resources
This can be used either on attack or defense, but either way, its probably going to be a huge game-changing moment, and its well worth having in any deck that has Creatures
Notice how, among 2-color decks, Azorius and Boros are the most popular (around 7,200 games each), and Izzet is third with about 6,200
By benefiting the player with board presence every time a card leaves their graveyard, Insidious Roots gives an excellent reason for this archetype to return to the green variants, and perhaps even include the famous Cauldron Familiar and Witch's Oven combo to extract even more value from it while holding the game
Now there is a bit too much removal for Fiend to shine and Rats simply isn't enough disruption to merit a 2 mana 1/1