The Gearhulk is just great with powerful expensive instants and Mystic Confluence is one of the most expensive and powerful instants you play without the Gearhulk synergy
In Magic: The Gathering, the "Power Nine" are nine near legendary cards which are incredibly rare, utterly valuable and hold the distinction of being printed very early in the game's long history
Stegron the Dinosaur Man and Double Trouble can increase the cards power even further, though this only lasts until the end of the players turn
But thats a sorcery, and Peek is an instant, and while youll always pay the mana here, being able to make decisions at instant speed might sometimes be necessary
Illustrated by David Szabo Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Legal Modern Not Legal Brawl Legal Legacy Not Legal Comp
When you bear the sizeable price-tag hovering over the card in mind, this probably isn't surprising