This is a seven mana Blue Artifact that you can tap to exile an Instant or Sorcery from a graveyard, and then you get to roll a d20
Like several other cards Ive mentioned so far, they can be extremely powerful in certain situations or under specific conditions instead of being extremely powerful all the time
When a player chooses to attack another player in combat, attackers and blockers are declared
Granting illusionary drawback Blue is the color of illusions, so we have given it what we now call the "illusion drawback" (previously called "skulking" after Skulking Ghost, when the ability was in black), which forces the controller of the creature to sacrifice it if it is ever targeted
I think Guiltfeeder usually kills quickly, as does Her Highness Phage the Untouchable
It won't be too difficult to cast this spell using convoke to spend little or no mana and it allows you to keep permanents such as Smothering Tithe or Rhystic Study on the board to keep putting in work while phasing out other things that you need to protect from removal or limited sweepers that won't hit certain permanent types