He stops your foes from gaining life, nasty good
Getting there compliantly starts with one principle: sell the product, not the brand
+2/+2 for legendary creatures is a ton of boost and a definite wincon, and we already have Orzhov decks that play Lyra Dawnbringer and Vona, Butcher of Magan that would benefit
Common themes include: Aggro thats real : low curves, sticky threats, burn/reach, disruptive creatures Tempo : cheap interaction, evasive threats, protecting a lead Midrange value : two-for-ones, planeswalkers, ETB creatures, grind plans Control : sweepers, card draw, removal suites, win conditions that stabilize Synergy decks (but still interactive): +1/+1 counters / tokens graveyard value (not always full reanimator) spells-matter artifacts (more value engine than Tinker you) The big difference vs Vintage is that Modern cubes generally have more games decided in combat , and fewer games decided by did you draw the broken accelerant. Who this category is for Pick a Modern MTG cube if: You want lower variance and fewer non-games
Since she brings the Grixis colors to the table as well as an instant/sorcery matters slate of themes, Kess is strong as she has access to the colors of removal, counters, burn, bounce, and card drawing