Cast Burning Inquiry for its escape cost by paying ({R} magic symbol) and exiling three cards from your graveyard.
Runaway Steam-Kin triggers, putting a +1/+1 counter on itself.
Resolve Burning Inquiry, causing each player to draw three cards and discard three cards at random.
Repeat steps 1-3 two additional times.
Activate Runaway Steam-Kin by removing three +1/+1 counters from it, adding ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) .
Repeat until you have less than three cards in your library.
If Thassa's Oracle is in your hand, cast it by paying ({U} magic symbol) ({U} magic symbol) .
If Thassa's Oracle is in your graveyard, cast it for its escape cost by paying ({U} magic symbol) ({U} magic symbol) and exiling three cards from your graveyard.
Thassa's Oracle enters the battlefield, causing you to win the game.