Reds aggressive decks set the template for the other colors, attacking early and often with disposable but damaging creatures, then trying to end the game in a flash with direct damage spells
While youre casting 1 and 2 mana card draw spells, your opponent is killing you by turn 6 in the original standard, and probably around turn 4 of 5 now
If I ever sell them then I will probably do that
Overall, this slot slowly injects a consistent supply of Modern legal Rares and Mythics into the MTGO economy, even if those cards are not on the curated card list
If so, run more, and make sure you're using that mana
Goro-Goro and Satoru Goro-Goro and Satoru is one card for a powerful duo that can go infinite pretty easily