Solve for Disappointment

Near Strategic Betrayal's 42-level disruption: missing spells is costly, but taking a permanent plus a one-shot surveil can justify selective sideboard testing.

Could be wrong if Other Empower Jace cards or a permanent-heavy Standard could make the token's accumulated loyalty materially more valuable.

It is much narrower and slower than Duress or Thoughtseize; the initial Jace generally amounts only to surveil 1, leaving a niche permanent-matchup role.

Could be wrong if A metagame centered on key artifacts, creatures, or enchantments could make permanent-only discard a better sideboard tool.

Modern's Thoughtseize is cheaper and hits everything; a sorcery-speed two-mana spell that misses nonpermanents has little room, and Jace is minor upside.

Could be wrong if A highly concentrated permanent-based combo deck could create a narrow but real sideboard demand.

Thoughtseize and Cabal Therapy set a far more efficient disruption bar. This misses key spells and its disposable surveil token does not repay the extra mana.

Could be wrong if An unusually important permanent-centric matchup could support isolated sideboard experimentation.

Unlike Duress, it can take creatures and artifacts, but two mana and sorcery speed make it weak against developed boards; the surveil supports a narrow sideboard role.

Could be wrong if If artifact and creature-combo decks become more prevalent, its broader permanent coverage could outperform this estimate.

One opponent's permanent is a poor multiplayer exchange, and a single surveil rarely matters. It is far below broadly useful cards such as Commander’s Sphere.

Could be wrong if Dedicated Jace-token or repeat-Empower support could make banking loyalty for cards a meaningful engine.

Taking the best permanent before it is cast while surveilling 1 is normally worth a card in Limited, though it is weak late and misses spells; above Goblin Plate Mail's 55.

Could be wrong if Unknown set speed, removal density, and Empower support determine whether proactive discard is consistently worth a main-deck slot.