Counting all cards that care about Dungeons, including ones that Venture and ones that care about if you've completed a dungeon, there are a total of 41 cards
Blue Mage's Crane allows players to cast sorceries or instants from opposing graveyards for 3 generic mana, Colossus Hammer can give Noctis +10/+10 at no cost since it can be equipped for free when Noctis is blinked, and Genji Glove can give Noctis double strike and allow for a second combat phase
#5 - Dark Confidant Way back in the day, Magic: The Gathering had an event called the Invitational
(Man, Freeze was a really bad card.) That being said, I still don't think this sees any play
Prompt Guidance determines how creative the model will be: higher values result in more detailed, sharper, and more contrasted outputs, while lower values allow for more experimental and unpredictable results
Red often does (hello, Dragons), and you can push this requirement from "reliable" to "virtually guaranteed" with the right commander