Matriath, the Great Ironroot

Vision -- At the beginning of your upkeep, reveal
the top card of your library. If that card shares
a permanent type with Matriath, the Great
Ironroot, put a vision counter on it, then you
draw a card and gain 2 life.
As long as Matriath has six or more vision
counters on it, it is a 10/10 Elemental creature
with vigilance and trample in addition to its
other types.