Doing so unprepares it.) Grave Researcher's prepared spell is the sorcery that lets you Reanimate and put a target creature from a graveyard onto your battlefield, and you lose life equal to its mana value
In addition, whenever a Nazgl enters the battlefield, they will trigger Tales of Middle-earths new The Ring Tempts You mechanic, as well as adding a +1/+1 counter to any Wraith creatures (which includes the Nazgl) when a player is tempted by the Ring
Being able to pay three mana to cast anything from the graveyard for a turn essentially translates to drawing a huge number of cards at a very low cost, but without the randomness that comes with actually drawing the cards
White does the heavy lifting of modifying your creatures with counters and equipment and auras while blue provides evasive threats like Malcolm, Alluring Scoundrel to carry all those modifications
One interesting aspect is how this card interacts with Delirium strategies, potentially enabling the mechanic while also providing a way to recover key permanents
The flip card designs from the original Kamigawa block are also pretty weird by todays Magic standards, as are split cards