Clan Defiance It may not look sexy, but Clan Defiance is the best X damage spell in Gruul, and better than most Red options with its ability to shoot down two creatures as well as Blaze an opponent
Which, aside from meaning you can effectively play two spells with a single card, also means that once you cast an Adventure, its associated creature is safe from forced discard effects
Aisling Leprechaun and Pixie Queen join the other Faeries we talk about above
This tradition not only ended, but was upended when Mythic Edition was sold exclusively through Hasbros online store and ChannelFireball
Some playgroups play a no-holds-barred style of EDH where anything goes and they jostle back and forth with high powered and combo decks and don't worry as much about "bad beats" because if they lose they just know they need to switch to a more powerful deck
Let me know in the comments, or over on Draftsims X