Hellbent is what we call a threshold mechanic
Crypt Ghast Most perks Ive listed about Nirkana Revenant, Magus of the Coffers, and Bubbling Muck apply to Crypt Ghast as well, so rather than extoll the virtues of Urborg, Tomb of Yawgmoth and X spells for the 4th time, Ill instead start by saying 4 is a very reasonable mana cost for a one-sided mana doubler before moving on to the other half of Crypt Ghasts text box
Waste Not Waste Not is a pillar of any strategy that cares about your opponents discarding cards or denying them resources
Your opponent has an unstoppable army, and youll lose on their next turn unless you can pull off a miracle
There are lots of great token generators and cards that care about tokens in White, Green and Black, whether you are looking to play old janky cards or the more powerful cards Wizards of the Coast has been printing in recent years
This happens at times when you, as an experienced MTG Arena player, think "Oh, I'd better go into full control or set a stop on a phase where I don't normally get a stop." Except you don't, because smart priority does it for you