Once the board is open and Ruhan sufficiently suited up with our armory (Obsidian Battle-Axe, The Reaver Cleaver, etc.) and auras (Steel of the Godhead, Mantle of the Ancients, etc.), we can further ensure opponents are vanquished in timely fashion by copying our Commander via cards like Helm of the Host and Irenicus's Vile Duplication, which ignore the Legendary rule
But that's not to say that all the good discounts are dead
The damage prevention clause here can be relevant as well
The latest cards from the Warhammer 40K Commander Deck, Necron Dynasties
Pay two mana and tap Dina to sacrifice another a creature and you'll gain X life and put X +1/+1 counters on another target creature
Those bits of burn really multiply when 1 or 2 becomes 4, and one of the best parts is that inexpensive, non-rares do tons of work with the god of deepest might