There was this idea with G/R that explore plus eternalize gave you good value, but then you have to draw your eternalize cards sometimes
Finally, if things start going really bad, just pull a Kefka and destroy the world using Ruinous Ultimatum. This card is incredibly high-cost but allows you to destroy all non-land permanents all your opponents control
Future Sight, Magus of the Future, and Bolas' Citadel are among the only cards that grant this ability
But once you start combining multiplicative mana effects and mana sinks like activated abilities or Buyback spells, anybody who isnt already comboing off will struggle to keep up
All in all, while substituting isn't a great solution for all cases, it is a good one for some
For those with difficulty deciphering color differences, theres a small Ink symbol on the far left to help out