If you can play it on turn one, two, or three, it enters untapped, giving you immediate access to mana without slowing your tempo
Thirst for Knowledge: At least some of the time, you will be able to draw three cards with Thirst for Knowledge and discard an ther Vial or Grafdigger's Cage, netting you that extra card
Time Spiral Time Spiral highlights the joke about Mark Rosewaters tendency to fix classic Magic cards by making new versions that end up being just as broken
That means from the stack by Dissipate, from in play like Swords to Plowshares, or from graveyards like Bojuka Bog
Slithermuse This 3/3 elemental has an amazing draw ability for a Commander or Team game like 2 Headed Giant
Its hard to argue with, but its not in the top ten of the best landfall cards in commander