Youd think that it would perhaps be less desirable with Omen Paths being available to cross between planes, but thats not necessarily the case
For the omen cost, you can draw three cards and then discard a card
For example, curving Emberheart Challenger into Monstrous Rage and Boros Charm can transform it into a 7-power trampling double striker, hitting for a staggering 14 damage as early as turn three
The key value of this number is to tell you how many slots exist within a certain rarity/frame combination
However, in builds of Elves across Modern, Legacy and even Vintage, Fiend Artisan really hit its stride in 2022
It wont take much to build a deck full of impulse draw, graveyard hate, phasing and proliferate