QCSE Quarter Century Secret Rare Evil HERO Toxic Bubble X WATER Level 4 [ FiendEffect ] ATK 800 DEF 1200 You can Special Summon this card (from your hand), but you cannot Special Summon for the rest of this turn, except "HERO" monsters
The final effect gives you the option to discard your hand and draw four cards every time the Ring tempts you, allowing you to draw a fresh set of cards if you're short, or to throw lots of creatures into your graveyard if you're leaning into Sauron's role as the Necromancer
For context on just how under the radar Brainstorm was, heres the eventual champion and shortlist Hall of Fame candidate, Justin Garys U/R list from that same event: Creatures (12) Lands (22) Spells (26) 2 Nevinyrral's Disk 4 Counterspell 4 Dissipate 4 Force of Will 3 Earthquake 3 Disintegrate 2 Incinerate 2 Serrated Arrows 2 Binding Grasp Sideboard Super rad deck, to be sure, but definitely could have benefited from a playset of Brainstorms
While it can pull a needed Pokemon from your deck into your hand (and the same for your opponent), its main use is in discarding your opponents Stadium
And so is that what caused Bill to change his mind
It makes the insignificant conspicuous, the repulsive alluring, and the deadly irresistible