Sword of Forge and Frontier Land and card draw The Swords of series in Magic: The Gathering run a gamut of usefulness, but all of them cost three mana, grant protection from two colours, add +2/+2 and provide some kind of benefit if you can hit a player with a creature equipped with them
Geralf takes what he needs right away and converts those creature cards into huge stalking Zombies, and Lantern of Insight helps him plan accordingly
Glimpse the Unthinkable was a $40 card at one point and Hedron Crab remains a $4 uncommon today
Each card is one auction away from sky-rocketing or plummeting in price in some instances
I eventually settled on counters and dice, and knowing how much I dislike dice, thats impressive, huh
Launch the Fleet is pretty awesome with heroes or Spear of Heliod, but Ive been burned before by counting on heroes