By countering one's own 0-mana spell, the card allows the controller to draw out powerful cards ahead of the curve
Black cards are notorious for making you pay additional costs, such as discarding cards, sacrificing creatures, or paying life to get big effects out of them
Junk and Rad Before we get to my list, lets talk about these decks on a more macro level
[Ended]May-July 2022 Regionals Details Competitive Digimon Card Game Events ascend to the next level with Regionals
The term "ramp" in Magic: The Gathering refers to any spell card that generates a net positive amount of mana, whether that be through floating mana that expires at the end of the phase, lands placed onto your side of the field (though some count searching up lands to put into your hand as ramp as well), or artifacts and cards that create artifacts that can tap for mana
if it discards something else, it's most likely a "Dark World" monster, providing synergy between the two archetypes