pokemon cards near Central Park and 1 Pokémon TCG Live code card I Bought "Near Mint" Pokemon

Now to sprinkle in some flicker effects and you understand why the creature is supposed to cost

I don't believe either of those rules are in contention for the top spot of "old rules that would still be be sweet to use in oldschoolmtg", but that is a fully different post

For example, you could tap two Snow-Covered Mountains and use that red mana to activate Icehide Troll's last ability

Depending on your deck, you might also want to look at Clever Concealment, Flawless Maneuver and Cosmic Intervention the latter of which is a lot of fun with fetchlands and mass land destruction, or board wipes when you run a lot of strong EtB effects