dark machamp pokemon card Holofoil - Team Rocket Mitsuhiro Arita Dark Machamp (10) - Team

There is no exchange, no bid/ask spread visible on a screen, and no guaranteed buyer

Blue bounce spells are the second best tempo cards in limited behind pure removal spells, so a reusable enchantment Unsummon dependent upon playing creature to begin with seems like a card that you'd like to have in your deck

There are actually a lot of ways the exile zone gets used in regular gameplay across all formats

Whether its a sideboarded Mirran Crusader, a pile of Lingering Souls tokens, an Etched Champion, a Young Pyromancer and company, a Nexus of the Blinkmoth or Inkmoth variety, fourteen 1/1 Goblin tokens, or simply a small pile of mana accelerants, Kozileks Return will clean them all up at instant speed, and theres no saving them with Burrenton Forge-Tender

Oversized promotional cards are the main exception to this standard

Leyline of the Void is a formidable deterrent