(Seems to be based on the Duel Terminals and the upcoming Duel Links game)
If you cascade into a counterspell, you can cast that spell the same as you would any other cascaded spell
For those unfamiliar, I mainly play Battlecruiser and Low Power, so most of these cards arent going to be your new hidden tech for competitive play, though I will be hinting at some best in slot options that currently get played and highlight some lesser known variants with similar effects
Area: Shrine of Chaos) Ishizu Ishtar (Symbol: Light
And it works on any form of leaving the battlefield, so you can bounce or exile or even shuffle it into your library, so it works with effects as diverse as Terminus, Fleetfoot Panther, and effects like Goblin Bombardment and Crystal Shard
It's clear to see why this super simple yet stunning illustration rare from Obsidian Flames is in the top ten