dark machamp pokemon card Holofoil - Team Rocket Fighting Mega Punch (30) Fighting Dark Machamp Pokemon New |

People notice the difference and start calling the old unlimited cards Shadowless

Then, he played cards that either make mana or cost nothing so that his storm count would be huge, and he kills everyone at the table with a huge number of Tendrils

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

This will tend to matter more for multi-color builds and tribes with big mana costs in multiple colors, so your options ARE narrowed somewhat, but over time more and more options will appear