Magic Mushroom

Boss Treasure Room Treasure Room

(page 1, column 12, row 1)(page 1, column 2, row 2)

Magic Mushroom is a passive item.

Effect

• Grants one red heart container.
• +0.3 Damage Up.
• x1.5 Damage Multiplier.
• +5.25 Range Up.
• +0.3 Speed Up.
• +0.5 Tear Height.
• Isaac grows in size.
• Fully restores all red heart containers.

Notes

• The Magic Mushroom does not give a tears up or luck up despite its quote saying 'All Stats Up!'.
• The x1.5 damage multiplier does not stack with the x1.5 damage multiplier from Cricket's HeadIncreases damage by 0.5, and multiplies it by 1.5x., from the combination of The Book of BelialUpon use increases damage by 2 for the current room and by a further +50% if the character also has the Blood of the Martyr.
  Guarantees a Devil Room or Angel Room will be open after beating a boss while holding it, or increases the chance by 12.5%. and Blood of the MartyrIncreases Damage by 1, and turns Isaac's tears into blood tears., or itself (by using an item such as DiplopiaDuplicates all pickups and item pedestals in the room., for example). However, it will stack with any multipliers not listed here.

Unlockable achievements

• 

  Huge Growth - Increase in size 5 times in a single run. Sources of increased size include "One Makes you Larger" pills, XI - Strength, and Magic Mushroom.

Trivia

• This item and its size change effect is a reference to the mushroom species, Amanita muscaria (fly agaric), which causes visual and auditory hallucinations, including perceived changes in size.
• 'Magic mushrooms' is a colloquial term for psilocybin mushrooms, although the mushroom itself contains no psilocybin or psilocin.
• This item and its effects are also a reference to the Super Mushroom from the Super Mario series of video games.
• This item is one of only two in the game that works towards 2 transformations (Stompy and Fun Guy). The other one is The BibleUpon activation, Isaac gains flight, allowing him to pass over all obstacles in the current room. Instantly kills Mom, Mom's Heart, and It Lives when activated, but will kill Isaac when activated while fighting Satan..
• This item shares a retro pickup sound with 1up!Gives an extra life. Upon death, you will respawn in the previous room with full health and lose the 1up!..

Seeds

 PC  WMZW QH3C (Treasure room adjacent to spawn)

 PC  TMVB HCXL (Treasure room adjacent to spawn)

 PC  PJJ2 MS7A (Treasure room adjacent to spawn)

 3DS  GA1R NMS1 (First floor treasure room; Curse of the Lost)

 Switch  YFYC 81TR (First Silver Treasure Room)

 Switch  EK6A 6V9Y (Tresure room adjacent to spawn)

 Switch  2EJV TMT3 (First treasure room north to the spawn)

Mushrooms

Items:

• 1up!Gives an extra life. Upon death, you will respawn in the previous room with full health and lose the 1up!.
• Blue CapGrants 1 heart container and increases tears, but decreases shot speed.
• God's FleshTears now have a random chance to apply a shrinking effect, causing enemies to shrink in size and also run away from Isaac. Shrunk enemies can be crushed and killed by walking over them.
• Magic MushroomIncreases all stats and enlargens Isaac.
• Mini MushIncreases Speed and Shot Height and decreases Isaac's size, but lowers Range.
• Odd MushroomGrants an empty heart container. Increases damage, range and shot height while reducing speed.
• Odd Mushroom+1.7 tears, +0.3 speed, reduces damage.

Trinkets:

• Liberty CapGrants a chance of triggering Mini Mush, Odd Mushroom (Large), Odd Mushroom (Thin) or The Compass effects for the current room upon entering it.