One common application of Ephara involves playing it in the command zone as a flicker commander that draws less hate than something like Brago, King Eternal
Genevieve, Conniving Dragon As a 5-color commander, Genevieve, Conniving Dragon gives you access to everything, but what sets them apart is that it rolls a party die each combat for a chance at up to 20 Treasures
Perhaps he'd also be a good ramp option for Obeka, Brute Chronologist, who could end the turn to skip the land-return drawback
(Feel free to request from a Poke from a specific set or I can provide options based on what Ive got on hand) None of the predone cards what youre looking for
In my experience, most competitive players will say their favorite format is booster draft, with a caveat
That's why the entry fee for most Arena events when you pay in gems (MTGA's premium currency) is a multiple of 15 usually 750 or 1500 gems instead of making things simpler and making it a multiple of 10