Patience

At the start of your upkeep, put a time counter
on Patience.
Remove five time counters: Search your library
for target angel creature card and
put it into your hand. Shuffle your library.
Sacrifice Patience at the beginning of your
next end step.
"You are the rope, the crippling coil around the neck
of every chance we were. And I refuse to lie here
in wait and see the room begin to fade and blur."