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KONAMI

It lets you discard to the top of your library rather than to your graveyard

If you gain extra combat and main phases, such as through an Aggravated Assault, your survival abilities will only trigger once, on the second main phase that turn

Apart from lands, ramp, draw, and removal, I would make the other categories "enablers" for cards like Awakening Zone and "payoffs" for cards like Dictate of Erebos You might notice you're not running too many ways to generate enough tokens and a tad too many sac outlets or payoffs that aren't triggering often enough

Unlike Dungeons, though, this mechanic is tracked on an emblem