Slow exploration

At the beginning of your upkeep put a
exploration counter on this card.
Landfall: whenever a land enters the battlefield put a exploration counter on this card.
At the beginning of your end step if this card has
more then ten exploration counters on it search
your library for three lands put them onto the
battlefield then untap them.
If there are five or more exploration counters on
this card you may play an additional land each
turn.