Here’s how I see the hour of prep going down. Feel free to poke any holes you see in it:
In the first minute Bats figures out that Magik is... magic, and they center their collective goal on getting her in close enough range with enough time to either try to slice Supes with Soulsword, or take him to Limbo where she’s ridiculous.
Next is figuring out potential long-range and projectile attacks, not necessarily put him down, but give Magik enough time.
He has Parker and Magik try to figure out how to incorporate Bloodstones into his web fluid to create magically enhanced webbing.
He has Spidey and Northstar practice a move where Parker thwips a continuous thread of that webbing, which Jean-Paul can fly and wrap up something with at light speed.
He has Storm practice her flash-freezing and setting off lightning inside objects.
What else you got? Logan and Rasputin demo their Fastball Special and Bats immediately points out that with a wind-gust-assist from Storm it become vastly more accurate and powerful.
All of it is just to slow Supes down for the second it takes for Magik to do her thing. This might happen about half the time. The team was picked for having just enough strength, durability, speed, smarts, magic and power to not be immediately shit-stomped 100% of the time.