Suddenly you could splash Twisted Abomination and a single Swamp - if you drew the Swamp, you could play the Abomination, and if you didn't draw the Swamp and drew the Abomination, you could fetch the Swamp and thin your deck
The mechanic itself is versatile enough and there are no problematic rules associated with Hellbent, making the mechanic straightforward to understand
Chase High-Rarity Cards: Hunt for Enchanted, Iconic, and Epic cards that highlight the best of Lorcana
Does Madness Ignore Timing
Her planeswalker form, Tamiyo, Seasoned Scholar, can certainly be useful, slowing aggro decks to a crawl with her defensive ability, fetching an essential spell at the right moment, or preparing to draw half your deck
Some want it for the phyrexian nostalgia