Yarna, Envoy of Chaos

When you cast Yarna, Envoy of Chaos, create a Legendary 2/2 Black creature token named
Chaos Apostle with: {x}, Sacrifice this creature:
Search target players library for a card with
converted mana cost X or less, then cast that card without paying it's mana cost.That player then
creates a token of this card.
"What good is power if we can't all share it?
- Yarna, Envoy of Chaos"