Wings of Hubris — ruling 1

If Wings of Hubris becomes attached to a creature you don't control, you can activate the ability to make that creature unblockable, but you won't be able to sacrifice the creature at the beginning of the next end step.

Wings of Hubris — ruling 2

If you gain control of a creature "until end of turn," you control it during your end step. If you use Wings of Hubris to make this creature fly too close to the sun, you'll sacrifice it.

Wings of Hubris : règles, fonctionnement et interactions (MTG)

Wings of Hubris 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

Equipped creature has flying. Sacrifice this Equipment: Equipped creature can't be blocked this turn. Sacrifice it at the beginning of the next end step. Equip (: Attach to target creature you control. Equip only as a sorcery.)

How it works : Wings of Hubris

Original English text — Wizards of the Coast / Scryfall

#1January 24, 2020· Wizards of the Coast
If Wings of Hubris becomes attached to a creature you don't control, you can activate the ability to make that creature unblockable, but you won't be able to sacrifice the creature at the beginning of the next end step.
No other card is named in this ruling.
#2January 24, 2020· Wizards of the Coast
If you gain control of a creature "until end of turn," you control it during your end step. If you use Wings of Hubris to make this creature fly too close to the sun, you'll sacrifice it.
No other card is named in this ruling.