Deadshot Minotaur — ruling 1

The "enters" ability is mandatory. If you're the only player who controls a creature with flying, you must target one of those creatures.

Deadshot Minotaur : règles, fonctionnement et interactions (MTG)

Deadshot Minotaur 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

When this creature enters, it deals 3 damage to target creature with flying. Cycling (, Discard this card: Draw a card.)

How it works : Deadshot Minotaur

Original English text — Wizards of the Coast / Scryfall

#1May 1, 2009· Wizards of the Coast
The "enters" ability is mandatory. If you're the only player who controls a creature with flying, you must target one of those creatures.
No other card is named in this ruling.