This can be generic damage increases from cards like Fiery Emancipation, or effects that specifically work with red cards, like Torbran, Thane of Red Fell, Embermaw Hellion, and Mechanized Warfare
While flicker decks have historically been better for adding blue, its now increasingly possible to get away without doing so
If youre a 3-color Jund good stuff deck and lose game 1 to Sunfall, you might be able to use your Skittering Surveyor, Blighted Burgeoning, and an Island to surprise your opponent with Negate
This pair of humans do some graveyard work, but are still susceptible to removal when they reach their divine form
It's a card that is reprinted every time there is a Desert synergy