Vraska, reine des Golgari

Text:

Rulings:

• 10/5/2018 You choose whether to sacrifice a permanent (and which one to sacrifice) while Vraska’s first ability is resolving. No player may take actions between the time you choose which permanent to sacrifice and the time you do so.
• 10/5/2018 Tokens that aren’t a copy of something else don’t have a mana cost. Anything without a mana cost normally has a converted mana cost of 0.
• 10/5/2018 If a permanent has <img src="/Handlers/Image.ashx?size=small&amp;name=X&amp;type=symbol" alt="Variable Colorless" align="absbottom" /> in its mana cost, X is considered to be 0.