mtg niv mizzet cards Niv-Mizzet, the Firemind Print Whenever a player casts an instant or sorcery spell Niv-Mizzet Parun | Dark Souls

This is where all my thoughts stem from

Now, all of a sudden, all the Clues you pile up aren't just future card advantage, but they're now also extra Artifacts that can be tapped, sacrificed, or otherwise turned into mana and value, which makes the whole engine feel a lot more explosive than it first appears

See this page for details on the contents of each theme

(2019-10-04) An effect may refer to a card, spell, or permanent that "has an Adventure." This refers to a card, spell, or permanent that has an adventurer card's set of alternative characteristics, even if they're not being used and even if that card was never cast as an Adventure

DMU has a bunch of cards aimed at Standard and some pretty niche effects, too

Whenever another nontoken creature enters the battlefield under your control, you may pay