Each land in the cycle enters untapped if you control a basic land a very easy requirement and then taps for its respective colour
Unctus, Grand Metatect Unctus, Grand Metatect turns your blue creatures into potential card draws, pumps your artifact creatures, and can turn any creature into an artifact
Between these threats and more complicated kinds of value engine, discard decks are able to successfully leverage an uneven war of attrition and tempo: drawing enough cheap spells to continuously trade for and neutralise the opponents draws, while also grinding steadily towards a more permanent victory
A fairly safe option that can take out small characters, and works as a Shift target for Mickey Mouse Playful Sorcerer in Broom decks
[9] Some promo cards dont have either symbol on them, but rather a stamp that indicates what event they were made for (such as Gen Con or D23)