When used, gives Isaac +0.5 speed and greatly increases the rotation speed of Isaac's orbitals for 3 seconds. Gives Isaac a spinning top orbital that blocks enemy shots and deals contact damage to enemies while held.
Quote
"Let it rip!"
Effects
While the item is held, grants a spinning top orbital that blocks enemy shots and deals contact damage enemies (3.5 per tick, or 10.5 per second).
While the item is being used (i.e the "use item" key is held), gives Isaac +0.5 speed and causes all of Isaac's orbital familiars to deal more damage, spin much faster, and knock back both enemies and Isaac when they deal damage.
The damage bonus Isaac's orbitals receive is (1.5 x orbital damage + 6).
The Speed given by Spin To Win can bypass the normal cap of 2.0.
Isaac can stop using Spin to Win at any time by releasing the use item button, at which point Spin to Win starts recharging.
Blue flies and blue spiders are also affected.
Synergies
Book of Virtues - Generates up to eight wisps while charging the item, which are immediately extinguished once the charge runs out. The fire rate of the wisps is based on the speed they're rotating.