Vraska, Scheming Gorgon — ruling 1

Vraska’s first and last abilities affect only creatures you control at the time it resolves. Creatures you begin to control later in the turn won’t get +1/+0 or gain abilities.

Vraska, Scheming Gorgon — ruling 2

The triggered ability Vraska grants to creatures with her third ability triggers on any damage those creatures deal, including noncombat damage. If multiple players are dealt damage simultaneously by affected creatures, you choose the order in which those triggers resolve. If all your opponents have lost the game, you’ll win the game before any more of the triggers resolve.

Vraska, Scheming Gorgon : règles, fonctionnement et interactions (MTG)

Vraska, Scheming Gorgon 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

+2: Creatures you control get +1/+0 until end of turn. −3: Destroy target creature. −10: Until end of turn, creatures you control gain deathtouch and "Whenever this creature deals damage to an opponent, that player loses the game."

How it works : Vraska, Scheming Gorgon

Original English text — Wizards of the Coast / Scryfall

#1January 19, 2018· Wizards of the Coast
Vraska’s first and last abilities affect only creatures you control at the time it resolves. Creatures you begin to control later in the turn won’t get +1/+0 or gain abilities.
No other card is named in this ruling.
#2January 19, 2018· Wizards of the Coast
The triggered ability Vraska grants to creatures with her third ability triggers on any damage those creatures deal, including noncombat damage. If multiple players are dealt damage simultaneously by affected creatures, you choose the order in which those triggers resolve. If all your opponents have lost the game, you’ll win the game before any more of the triggers resolve.
No other card is named in this ruling.

Interactions with other cards

These cards' text mentions Vraska, Scheming Gorgon.

Vraska's Scorn

Target opponent loses 4 life. You may search your library and/or graveyard for a card named Vraska, Scheming Gorgon, reveal it, and put it into your hand. If you search your library this way, shuffle.