If you have enough creatures, you can use them to pay the mana cost and the buyback cost to effectively cast the spell for free, and it even comes back to your hand
Dark Decision While not quite as powerful as a straight up tutor card, Dark Decision is still a great value for only two mana and one life
They still play pretty much the same game, except now you have a more streamlined deck
Don't do this, but you could potentially go infinite with Aggravated Assault (mana and combats)
Excess cards should just be turned into immediately usable resources, like gold. Noxious Some people are able to thrive within this gold and gem system and can ride the free-to-play train while still building any deck they want
Starting with Ninth Edition they came with a 40-land pack that continued until Mirrodin Besieged doubled the count to 80