mtg cards like oblivion ring 🔥Win in a blaze of Glory! 🔥 Target :Gibbering Fiend: with "Oblivion Ring" Then cast "Worldfire" exiling all permanents and reducing everyone's life to 1. After Worldfire resolves Gibbering fiend returns from All cards will be carefully packed for safe transit The 30 Best Enchantment-Based Exile

No returns, refunds, exchanges, or compensation will be provided for issues related to the contents of a sealed product, including but not limited to missing items, damaged cards, print defects, collation issues, packaging errors, or any other manufacturer-related defects

Thats an easy trigger to fulfil, making this a must-answer threat that likely produces another must-answer threat on death

On the other hand, if your goal is to build the best madness deck possible, you'll probably be disappointed

Channel [Pay Life, Cast Anything] Channel is one of the most infamous green spells ever printed

This is how the Mana Statistics tab of the CDF categorizes the cards in a deck