Remember that you can choose if you want to return Narcomoeba from the graveyard or not
The game was played quickly and was asynchronous
Plus his mana can be used for things when you don't have any creatures out to play with, whereas Sarkhan's +1 and -2 really do require a certain creature-fueled board state, but Domri can always lean on making mana or using his 2nd ability even when there are no creatures on the battlefield
Cascade is at its most powerful when you hit the most expensive card you can cascade into and so if you assume an even distribution on the mana curve you increase your odds of hitting the highest card you can by having the lower cascade
How To Play The Deck A Sephiroth, Fabled SOLDIER Commander deck is constantly sacrificing its own creatures, burning your opponents with Sephiroth's effects and other permanents that have similar effects
This is its biggest advantage over W/U/R, W/R/B, and Esper