The last main theme for ruby is lore drain
I took him to the bar, bought him a mug of whatever beer was on tap, and we wandered around the room to soak in what was very likely the largest concentration of Alpha cards since Magic first rolled out of the Carta Mundi factory back then, or the games debut at Origins 1993, or the first World Championship at GenCon 1993
Popular X spells like Heliod's Intervention, Martial Coup, and White Sun's Zenith can turn a game around in one spell
But what can he do for your deck of cards
Your win conditions include Brainstorm, Tendrils of Agony, Gutshot, Guttersnipe, as well as storm spells that can generate a ton of creature tokens such as Talrand or Empty the Warrens
No creature that has a color can block it, making it a guaranteed hit of four damage every turn