This effect reduces only the amount of white mana you pay
He'd been trying to take advantage of Master of Cruelties, a card that had captured the imaginations of more than a few readers, and realized that Master of Cruelties doesn't actually need power to reduce an opponent to 1 life (although it's certainly worse against creatures if it doesn't have any), so he could use Heartless Summoning to play Master of Cruelties, since he was planning to make it unblockable with Rogue's Passage anyway
By virtue of coming down whenever you need, Rograkh makes a lot of the best cards in Commander even better
Kindred Discovery even counts tokens
Deharme null/null NOT LEGAL Standard NOT LEGAL Future LEGAL Historic LEGAL Timeless LEGAL Gladiator LEGAL Pioneer LEGAL Explorer LEGAL Modern LEGAL Legacy NOT LEGAL Pauper LEGAL Vintage LEGAL Penny LEGAL Commander LEGAL Oathbreaker NOT LEGAL Standardbrawl LEGAL Brawl NOT LEGAL Alchemy NOT LEGAL Pauper Commander LEGAL Duel NOT LEGAL Oldschool NOT LEGAL Premodern NOT LEGAL Predh Lifelink Whenever another nontoken creature you control dies, exile Liliana, Heretical Healer, then return her to the battlefield transformed under her owners control
Frantic Confrontation Full Bore Full Steam Ahead Fully Grown Fury Charm Gaea's Gift Gimli's Fury Graphic Violence Heroic Charge Horncaller's Chant Hungry for More Hunter's Prowess Hustle // Bustle Impolite Entrance Infuse with the Elements Invigorated Rampage Invoke the Ancients King Harald's Revenge Larger Than Life Lorehold Charm Lunar Frenzy Massive Might
