The Mirari Conjecture
Dominaria Promos · 57s/118 · Rare
$1.21 Near Mint market price (TCGplayer).
The Mirari Conjecture is card 57s of 118 in the Dominaria Promos set, released in April 2018. Its rarity is Rare. The artwork is by James Arnold. The Mirari Conjecture has also been printed in 2 other sets, so check the set and number to compare like with like.