2018-01-19 : 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.

2018-01-19 : 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.