Spin to Win

Effects

While the item is held, grants a spinning top orbital that blocks enemy shots and deals contact damage (3.5 per tick, or 35 per second).
While the item is being used (i.e the "use item" key is held), gives Isaac +0.5 speed and improves the contact damage on Isaac's familiar, even if they do not normally deal any. Additionally, orbital familiars spin much faster and knock back both enemies and Isaac when they deal damage.
- The contact damage improves to (1.5 x contact damage + 6).
  - If a familiar has no contact damage naturally, it still receives the +6.
- Isaac's effective speed can be higher than 2.0 while the item is active, even if the stat is capped.
- 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, and don't disappear while the item is in use.

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.
Gnawed Leaf: Gnawed Leaf will activate while using Spin to Win, as long as Isaac is stationary. This allows for a brief moment of high damage against enemies that chase Isaac.
(The Forgotten) The Forgotten: While as The Soul, channeling Spin to Win will cause the Forgotten's skeleton to deal contact damage.
Taurus: Spin to Win's speed boost instantly triggers the item's invincibility effect.

BFFS!: The +6 contact damage bonus is not increased. Most notably, this means familiars without natural contact damage do not gain additional damage, and others gain less than expected.
Mom's Razor: Mom's Razor deals a fixed 16.5 contact damage, instead of its usual damage-scaled value, while Spin to Win is active.
(Tainted Forgotten) Tainted Forgotten: Unlike the non-tainted counterpart, Tainted Forgotten's body gains no extra contact damage while Spin to Win is active. Additionally, Tainted Forgotten's contact damage familiars have only 80% of their usual damage.
Void: After absorbing Spin to Win, using Void spawns a temporary, passive Spin to Win familiar for the room. It cannot be activated further for the damage and speed bonuses.