I think extreme rarity on any sort of game is a terrible idea
Where to Trade Local game stores often have bulletin boards or designated trading days, or may give players opportunities to trade cards before and after scheduled tournaments
SIMIC1 Sol Ring1 Arcane Signet1 Commander's Sphere1 Command Tower1 Exotic Orchard1 Simic Signet1 Simic Growth Chamber1 Temple of Mystery1 Thornwood Falls1 Simic GuildgateThe set printings of cards you'll receive is varied a
This allows you to keep your hand stocked with cards constantly, so you always have options and are always one step ahead of your opponents
Hermit Druid, Life from the Loam, Entomb, Buried Alive, Faithless Looting, Wheel of Misfortune, Frantic Search, and Bazaar of Baghdad are all great ways to do the former