Foreseen watcher

Prophesy {u} (If you look at this card with a scry
ability while it's within your library you may
immediately play it for its prophesy cost.)
Seclude (at the beginning of your upkeep you may
exile this creature under an island you control or return
this creature from exile if it is secluded. If this creature
is the only creature exiled under an island it is
secluded. Other player's cannot activate this ability).
When this creature enters the battlefield exile it
under and island yo