Vraska, Golgari Queen [Guilds of Ravnica] Plane you may draw a card

you may draw a card unless that player pays {4}

Set: Magic 2013 Type: Enchantment Rarity: Mythic Cost: {7}{U}{U}{U} You may cast spells from your hand without paying their mana costs

But where is the source

The hippo grows wings to fight the condor

Vraska, Golgari Queen [Guilds of Ravnica] Plane you may draw a cardSet: Guilds of Ravnica Type: Legendary Planeswalker Vraska Mythic Cost: {2}{B}{G} +2: You may sacrifice another permanent. If you do, you gain 1 life and draw a card. 3: Destroy target nonland permanent with converted mana cost 3 or less. 9: You get an emblem with "Whenever a creature you control deals combat damage to a player, that player loses the game."