The Eldritch Tome Volume I by Stephen Blumberg Goodreads

Slime gods are decently difficult to beat, especially in revengance and death. They're fought right before WoF. And imo, because of its short range, eldritch tome is a dangerous option for WoF. Once you're in hardmode, it's surpassed by the hex doll. All just my personal opinion though. Edit: but yeah, mage is just kind op. The Abyssal Tome is a Pre-Hardmode spell tome that is dropped by The Slime God. When used, it fires a slow-moving purple glob that passes through tiles and is not affected by gravity and will slowly decelerate before stopping in place. After hitting an enemy twice or after 5 seconds from being shot,

The Calamity Mod is one of the largest content mods for Terraria which adds many hours of endgame content and dozens of enemies and bosses dispersed throughout the vanilla game's progression.. The Eldritch Tome is a Pre-Hardmode spell tome that is dropped by The Slime God. When used, it releases red tendrils which bend in random directions, similarly to the Shadowflame Hex Doll. Its best modifier is Mythical.