Red Red is an all around great sideboard color, and definitely the best color against creature swarm decks, while still having access to some of the most efficient artifact removal
As the card pool has naturally expanded, certain cards have established themselves as true powerhouses on the competitive stage
White's control is showing with this cute dwarf

Brokkos, Apex of Forever Commune with the Gods Cosima, God of the Voyage Demigod of Revenge Dictate of the Twin Gods Egon, God of Death Enter the God-Eternals Ephara, God of the Polis Erebos, God of the Dead Esika, God of the Tree Fists of the Demigod Glacier Godmaw Glimpse the Sun God God-Eternal Bontu God-Eternal Kefnet God-Eternal Oketra God-Eternal Rhonas God-Favored General God-Pharaoh's Faithful God-Pharaoh's Gift God-Pharaoh's Statue Goddric, Cloaked Reveler Godhead of Awe Godhunter Octopus Godless Shrine Godo's Irregulars Godo, Bandit Warlord Godo, Bandit Warlord Gods Willing Gods' Eye, Gate to the Reikai Gods' Hall Guardian Godsend Godsire Godtoucher Godtracker of Jund Halvar, God of Battle Hazoret, Godseeker Heliod, God of the Sun Helm of the Gods Honor the God-Pharaoh Idol of False Gods Iroas, God of Victory Jorn, God of Winter Karametra, God of Harvests Karona, False God Karona, False God Avatar Keranos, God of Storms Kiora Bests the Sea God Klothys, God of Destiny Kolvori, God of Kinship Kruphix, God of Horizons Loki, God of Lies Loki, God of Mischief Machine God's Effigy Mogis, God of Slaughter Nicol Bolas, Dragon-God Nicol Bolas, God-Pharaoh Nylea, God of the Hunt Pharika, God of Affliction Phenax, God of Deception Pollywog Symbiote

Each power-up ability is an activated ability that can be activated only once