4 Add: Muldrotha, The Gravetide Cut: Skull Prophet Another efficient back-up plan, Muldrotha, the Gravetide lets you play lands and cast permanent spells from your graveyard, though only one type per turn
Like most Magic: The Gathering cards, the value of Guide of Souls depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Modern Horizons 3)
You could easily stack up the poison counters in one move
The creatures aren't the most threatening stat-wise but we play tons of light "lock" threats that are disruptive against the opponents by delaying noncreature spells with cards like Thalia, Guardian of Thraben or of course the big boar himself, Yasharn, Implacable Earth