Many local game stores will take non-foil commons and uncommons for about $2 to $5 per 1,000 cards
Kaito, Bane of Nightmares Two generic, one blue, one black legendary Planeswalker Ninjutsu: One generic, one blue, one black (One generic, one blue, one black, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) During your turn, as long as Kaito has one or more loyalty counters on him, he's a 3/4 Ninja creature and has hexproof
The general economy also plays a role, good times can boost new set excitement, while bad times can dampen it
Stroke of Genius is a card that makes this type of gameplay easier than it should be
If you like durdly 4-card combos then toss Myr Moonvessel into your Koll, the Forgemaster deck with Goblin Bombardment and an equipment you can equip for 0, like Shuko
The idea of this deck is to play Demonic Pact or Greed's Gambit and then use Stiltzkin, Moogle Merchant or Harmless Offering to donate them to our opponent