Shire Scarecrow + Scarecrow Guide + Foraging Wickermaw Decks built around Tales of Middle-earth commanders sometimes use Shire Scarecrow as a budget mana filter, which lines up with the roles it has in any deck besides scarecrow typal and defender decks
$7.99 Manamorphose (1746 - Ororo Borealis - Foil) Secret Lair $17.99 Black Panther, Wakandan King (1747 - Foil) Secret Lair $34.99 Captain America, First Avenger (1726 - Foil) Secret Lair $3.99 Lightning Bolt (1743 - Foil) Secret Lair $2.99 Ice Storm (1745 - Foil) Secret Lair $0.59 Grapeshot Dominaria Remastered $0.99 Planar Genesis Modern Horizons 3 $0.49 Stormcatch Mentor Bloomburrow $4.99 Gitaxian Probe New Phyrexia $24.99 Iron Man, Titan of Innovation (1731 - Foil) Secret Lair $37.99 Wolverine, Best There Is (1737 - Foil) Secret Lair $0.59 Psychotic Fury Dissension 0 results found
If you have cards that get you some additional mana for each spell you cast, like some of the aforementioned commanders, you can definitely go off very quickly
Feel The Burn Looking at the current MTG Pauper metagame, a few homes for Summon: GF Ifrit jump out right away
Ulamog's Nullifier and Mind Raker are much stronger cards when you can use their abilities