In all seriousness, Abrupt Decay feels like a steal at $5
If the player guesses incorrectly, the attacking player is able to cast it for free - otherwise they can investigate to gain a clue token
I assume basically all Human tribal decks will play a copy, and other Orzhov decks might considering running it as well, although there is a lot of competition since Swords to Plowshares, Path to Exile, Anguished Unmaking, Utter End, and Council's Judgment (among other exile-based removal spells) all see play in the format
8: Target opponent gets an emblem with "Whenever a player draws a card, you lose 2 life." Legendary Planeswalker - Nixilis Color tag templates(None) Painful Truths Converge You draw X cards and lose X life, where X is the number of colors of mana spent to cast this spell
It can be a mana rock, draw you cards and help you proliferate