yugioh pure danger deck Danger! Feets of Strength! - Yu-Gi-Oh! Card Database Yu-Gi-Oh!: All Danger! Monsters, Ranked

Delirium, which first showed up in the two-part Shadows Over Innistrad/Eldritch Moon block, is a mechanic that gives your cards a bonus under the condition you have four or more different card types among cards in your graveyard

Either you are using low powered cards that cater to every one or you are using narrow cards

Edit: I wasnt sure how the poll would calculate results, but the way its showing is the % of voters who chose a specific answer - which is why its over 100%

One other subtle strength here is the degree of control you can have over exactly when cards are milled, and how many (assuming you have painlands or other unrestricted self-damage sources)