what is a proxy card mtg The Real Differences Between Proxies vs Counterfeit Magic Cards FOIL Sword of Fire and

If you still control three or more artifacts as that ability tries to resolve, the Case will be solved

Embereth Shieldbreaker

Activated Sleeper Ajani, Sleeper Agent Awaken the Sleeper Benalish Sleeper Breath of the Sleepless Charmed Sleep Emissary of the Sleepless Evolved Sleeper Fear of Sleep Paralysis Kongming, "Sleeping Dragon" Pillory of the Sleepless Savior of the Sleeping Send to Sleep Shanid, Sleepers' Scourge Sigil of Sleep Sleep Sleep Magic Sleep Paralysis Sleep of the Dead Sleep with the Fishes Sleep-Cursed Faerie Sleeper Agent Sleeper Dart Sleeper's Guile Sleeper's Robe Sleeping Potion Xantcha, Sleeper Agent

This cares about Commander and multiplayer, but not formats like Type Four, Highlander, or Five Color or Pauper, just Commander specifically and multiplayer generally