You still have to pay the full amount of mana for those spells plus some life, but it's all inherent card advantage
Using the game mechanics to form a haiku in the rules text is a brilliant bit of card design that deserves praise
While horrors aren't nearly as supported as more popular creature types, Mind Flayarrrs includes several niche reprints for it, including Herald's Horn, Reflections of Littjara, and Hullbreaker Horror
It occurs to me it's a bit risky having all that power wrapped up in one, wardless, creature, so why not dilute it amongst 10,000 zombies, with Ghoulcaller Gisa
Im glad you asked
A lot of commonly used creatures in Spellslinger decks, like Monastery MentorMonastery Mentor, Third Path IconoclastThird Path Iconoclast, and Kykar, Wind's FuryKykar, Wind's Fury, care specifically about noncreature spells