Among a litany of great features is the metagame tab, which gives you a look at what other decks are in the format and you can see how those kinds of decks are performing in the format
That is great in Rakdos with Cabal Coffers and Urborg, Tomb of Yawgmoth or with Gruul's ramp like Cultivate and Rampant Growth and Explosive Vegetation to reliably get to that 8 mana
in a pinch, sacrificing it for any color mana can be clutch to casting something in my five-color deck
In future though, should fake cards have a near-perfect back, this will become a problem even for old players
Siona, Captain of the Pyleas is another choice at the top end of our shallow mana curve, but she provides a lot of value in retrieving a choice aura and then giving us fodder to sacrifice to our opponents, such as Doom Foretold
This synergy with fetch lands is a crucial point