So you have two Tropical Islands, one untapped? And you have 1 card in hand?
Untap, upkeep, Draw, Polluted Delta, Sac it and pay a life to get an Underground Sea, Done.
Ransac:
Life: 17
Cards in Hand: 3/1?
Cards in Library: 47
In Play:
(T) Birds of Paradise [0/1, Flying, T: add one of any...