Bottomless Pit — ruling 1

The ability is controlled by the player who controls Bottomless Pit. This means that Bottomless Pit can trigger abilities which trigger off an opponent forcing you to discard.

Bottomless Pit : règles, fonctionnement et interactions (MTG)

Bottomless Pit is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

At the beginning of each player's upkeep, that player discards a card at random.

How it works : Bottomless Pit

Original English text — Wizards of the Coast / Scryfall

#1October 4, 2004· Wizards of the Coast
The ability is controlled by the player who controls Bottomless Pit. This means that Bottomless Pit can trigger abilities which trigger off an opponent forcing you to discard.
No other card is named in this ruling.