All four elemental shrines are down, and Team B.S. is in the great library of the sorcerer's academy. Before going in, there's one question: drink the two saturation potions now, or do a scouting run first? "Let's beat him the first time." The death counter opens at Scoti 46, Basket 37.
Into the great library
The fight takes place in a huge library full of bookshelf mazes, with lava around the edges. Zombies drop down from spawners up in the sky, mobs with bows shoot from the sides, and somewhere in the middle of it all is the boss. The trick to finding it: "there's a gigantic pillar of smoke coming off of him." The chat makes the introductions: "[Sorcerer] My magic shall rain upon you!"
A shrine on the floor gives jump boost, and one of them starts lighting the place up just to see. It doesn't go well for long. A bow does nothing to the boss, and Basket goes down a couple of minutes in.
Basket felt the wither and never saw where it came from. Scoti brings most of the dropped gear up, though a stone pick, some torches and a chestplate stay missing, and a golden apple gets handed over.
Working out the rules
One of them missed part of the hints in the book, so they work the fight out as they go. The Last Sorcerer switches between elemental phases, and each one puts buffs and debuffs on the players and the mobs. One theory: when sparkles show up around you, standing still is what gets you withered. Keep moving and you're fine.
At one point the boss gets knocked into lava, and it isn't impressed.
Then the ice phase starts: "It's getting cold ... very, very cold." "ICE PHASE: All players are slowed." Being slow and needing to keep moving is a bad mix. A crowd of mobs paths straight for one of them, and soon after, the counter moves.
That's Scoti 47. Scoti went down near the lava fountain in the back, and the hindsight is quick: "We could've set our beds over there." The boss turns out to be all melee, no ranged attack, and the wither seems to kick in about three seconds after you stop.
Walls and torches
The new plan is crowd control. They build walls to make a central walkway, so the mobs that drop from the sky at least can't path in from far away. Torches go on the obsidian spawners overhead, which might cut down the spawns a little. Food runs low, down to a handful of potatoes.
Then the boss comes out into the open and the chat changes again.
Now everything is faster, charged creepers show up, and the boss's magic keeps raining on them every time somebody goes in.
The earth phase
Near the end the chat reads "[Sorcerer] I can feel the earth's power!" and "EARTH PHASE: All mobs are more resistant." The boss has "super knockback" now. They guess it might be near half health, but no message says so.
So they call it: "We're gonna run away and we're gonna see these guys next time." The counter closes at Scoti 47, Basket 38. The monument is still at 6 of 16 crystals and 4 of 12 emerald blocks.