Ancient Book

Ancient Book is a item that has a small chance of being dropped by any war mode boss. When you click on the ground with it, It'll open a wormhole which summons random enemies (and a small chance of minibosses* to attack your enemies. The Wormhole can also eat enemies dealing a good amount of damage. It looks like The Enrichidon from Adventure Time (but the name has been covered with dust) and everytime you use it there's a 1% it'll change to a normal Book. with the chance increasing by 1% every 4 times you use it. The Wormholes themselves look like the Worm Holes from Don't Starve, but red instead of brown.

Stats

 * 50-80 Magic Damage (Wormhole)
 * Consumes 50 Mana
 * Slow Speed
 * No Knockback (Enemies/Mini-Bosses do their same knockback)
 * Causes the debuffs Confused, Weak, and Silenced to enemies if they fall in the wormhole for 1-5 minutes. (Monsters like the Fire Imp cannot teleport away) and the player has a small chance to get the debuff Cursed as well as Darkness
 * Tooltip- "It's Wormhole Time!"
 * Sells for 10 Gold Coins if you try to sell it to a NPC (But the Wizard will buy it for 1 platinum coin)

Trivia

 * It's a reference to The Enrichidon from Adventure Time, even having wormholes open.
 * There's a small chance that the Wizard will say "Long ago, a ancient book that opened wormholes was lost. And maybe it was never seen again" and during Blood Moons he can say "I used to have a Ancient Book. It summoned Unicorns instead of Wormholes. Sometimes I think a wormhole just opened on the moon and that's why it turned red"
 * The Wormholes look just like the Worm Holes from Don't Starve, just red instead of brown.