Ruby/Amethyst might feel too simple for advanced players, and Steel/Emerald could feel confusing for beginners.
Otherwise, however, adventurer cards and Adventures are pretty much unchanged from when they first appeared in Throne of Eldraine
As you can see, the number of cards one can use to fill the graveyard is a very short list
It's a red instant that costs four mana, and it requires the additional cost of discarding a card from your hand
In this article, I'd like to provide an introduction to playing these types of cards and go over some of my favorite stax and hate cards for Commander
It's also only found on red, white, or blue creatures as it was originally a keyword associated with the Jeskai Way faction in Khans of Takir