A playset of these plus a playset of Dark Ritual is a great way to just steal your opponents cards and walk off with them on turn 1
The probability of opening a valuable rare is 1 in 6.75 or 14.81%
There are some great rooms to visit, but I'd be sure to visit Ebonlake Grotto for two faerie dragons, and the reward for venturing eight times is either an anthem/trample enabler, huge burn based on four cards' worth of mana value, or a one-sided board wipe
To those in need of even more protection, Falco has trained his Brokers in shielding magics, offering them as personal bodyguards and protectors to anyone in New Capenna who can afford it
Two mana, a card, burn damage, and an Edict effect: not a bad deal at all for two creatures
Thats niche, I guess, but its wicked cool