Secret Lair x Hatsune Miku: Digital Sensation featured six cards including a copy of Chord of Calling as well as a copy of Sol Ring
Legacy is an eternal format, and I have to believe eventually the metagame will shift yet again, yielding to new dominant strategies
Also, a shout out the Insight
Firstly, its a 4-mana spell for blue/red, and it has flashback for a second bite at the apple
youre drawing one card (which doesnt even increase your hand size since its only replacing the card you just played), and you look at a players hand
This may have something to do with less people "gathering" to play, but even so, some players are left pining for many cards they couldn't use over Arena