TMTRAINER

TMTRAINER is a passive item added in The Binding of Isaac: Repentance.

Effects

 * When picked up, all future items become "Glitched", causing them to become random combinations of 2-3 effects based on other items.
 * Additionally, the currently playing music will fade out. The silence will remain until another music track plays.
 * "Glitched" items can be passive or active and are completely randomly generated with nearly infinite possibilities.
 * Random effects combine effects that exist on other items, and assign them to a random event (e.g. on enemy death, on room clear, on damage taken etc.).
 * Glitched items sold for money cost a random amount of pennies up to 99 pennies.

Interactions

 * : Bag of Crafting makes normal items regardless of TMTRAINER.
 * : No items will be offered in exchange for glitched items.
 * : Glitch items will disappear if rerolled.

Trivia

 * The name and description of the item comes from the result of glitches in Pokémon Red and Blue. Certain glitch moves in that game can have names so long they run into the memory, corrupting it and causing glitchy effects, like the opponent's name becoming "TMTRAINER". A certain other glitch (commonly referred to as the ZZAZZ glitch) replaces the letters in the player's name with capital Zs except for every third letter.
 * The sprite is a reference to how sprites corrupt in Pokémon Red and Blue, especially after encountering glitch Pokémon.
 * The effect of the item is similar to a "Randomizer" for other games.
 * The music fading out upon acquiring the item is a direct reference to the effects of TMTRAINER in Pokémon Red and Blue, which fades the music out upon use until another song is triggered to play (assuming the game survives the effects).
 * The item's effect is a reference to an old randomizer mod that came out before Afterbirth+.
 * The pickup quote for the item is defined as "Isaac and his mother lived alone in a small house on a hill", but is different in game, with the pattern of Zs overlaid on top.
 * This item is used in DELETE THIS (challenge #45).
 * DELETE THIS will always be unlocked before TMTRAINER on any given file. This item,, , and are the only items that appear in challenges before they are unlocked. Small Rock and TMTRAINER are also notable for not being unlocked by beating the challenge they appear in.
 * ,, and are the only ALL CAPS items in the game. ( is not counted since it's an acronym.)
 * All glitched item sprites are shown as in Isaac's last will.