Printer
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The Printer is a passive item from the Epiphany mod. It is unlocked by defeating The Beast as 
Tarnished Eden.
Effects
Whenever the player uses an active item, the Printer will "imprint" that active item's effects on the card the player is currently holding and has selected; a card can be printed with an unlimited amount of effects, but each different effect can only be printed once. Any other instance of that card will remember them, not just the specific card the player has at the moment of the active item's activation.
For example, if the player activates 
Mega Blast while holding a Hierophant card, the effect will be "printed" on the card and it will trigger whenever the player uses a Hierophant card.
Notes
- The effect works for one-use active items as well, such as
Death Certificate.
Interactions
Deck of Cards - Theoretically allows for infinite cards via repeatedly printing the effect of Deck of Cards onto the cards granted, but requires several charges to utilize efficiently.
Starter Deck / 
Polydactyly - Item effects will only be printed on the card in the first consumable slot, and ignores the other card held.
Little Baggy - Not recommended. Item effects cannot be printed on pills, making this item almost completely useless without any cards.
Blank Card - Printing the effect of Blank Card onto a card will warp Isaac to an I AM ERROR room every time the card is used.
Golden Razor - All uses of a card with the effect of Golden Razor printed on it removes up to 5 coins from Isaac, but the damage increase is given regardless if Isaac has 5 coins or not.
Placebo / 
Clear Rune - Useless in most situations, as Isaac can only carry one consumable at a time. If the player has Polydactyly and is carrying both a card and a pill/rune, however, then activating the card with the effect imprinted on it will activate the effect of the pill/rune held.
Damocles - Using a card with the effect of Damocles printed on it will grant another copy of the passive Damocles, but no additional item pedestals will spawn.
Book of Virtues - Doesn't work. No wisps are spawned when printing the effect of Book of Virtues onto a card (NOTE: This may be the result of a bug).
Mom's Bracelet - Works as expected, but only if the player is next to a viable grid object.
Urn of Souls - Switches Isaac between holding the urn and not. If Urn of Souls is not being held and a card with the effect printed on it is used, the sound of the urn will play, but nothing will happen.
Vade Retro - Detonates all red ghosts in the room when the card with the effect printed on it is used. If Vade Retro is not held, no red ghosts will spawn upon enemies dying, and the effect becomes useless.
Esau Jr. - Doesn't work. Isaac does not switch to the Esau form when printing the effect of Book of Virtues onto a card (NOTE: This may be the result of a bug).
Bag of Crafting - Using the card with the effect of Bag of Crafting printed on it has Isaac hold up an invisible bag, making him able to pick up pick-ups as usual to contribute to the Bag of Crafting's current recipe. If Bag of Crafting is not held, Isaac will still be able to grab pickups, but it will not count towards the recipe Bag of Crafting currently has.
Everything Jar - Using the card with the effect of Everything Jar printed on it will only ever activate its 0-charge effect (spawning a poop)
Razor Blade / 
Blood Rights - Use with caution, as all future uses of the card imprinted with the effect of Razor Blade/Blood Rights will deal a full heart of damage to Isaac.
Trivia
- This item's sprite is used as the application icon for the mod's diagnostics executable.
