Eien, Kodama's Nurturer

Vigilance
Other Spirit creatures you control get +1/+1
and have Soulshift X, where X is the
number of Spirits you control.
Whenever you cast a Spirit or Arcane spell,
you may pay {2}{g}. If you do, search your
library for a basic land card, reveal that card
and put it into your hand. Then shuffle your
library.