Your cost starts at a reasonable , take Myojin of Cryptic Dreams for example, you save a bunch of mana and you turn your board into a Xerox machine
The key is to not find cheap, watered-down versions of expensive format staples like Dockside Extortionist or Rhystic Study
MTG Protection Decks Protection is most common in white
These Pikachu cards from the Chinese 151 Collect set have a gorgeous storybook art style, each one dropping Pikachu into its own little scene, running past a Mew, resting near a sleeping Snorlax, sneaking through a Gengar-filled night, and playing in a sunny meadow
Speaking of basic Pokmon, Stonjourner is a cracking card to get at the beginning of a battle, only requiring one fighting energy to hit with Stony Kick, which does 20 damage to your opponent's active Pokmon and 20 to a benched Pokmon