UU - Patient Zero Unicorn

Card Texts

C&C Print Second Edition: Each time any player (including you) would SACRIFICE a card, that player must SACRIFICE 2 cards instead.
C&C Print: Each time a player would SACRIFICE a card, that player must SACRIFICE 2 cards instead.

This card has no requirement effect text that prevents playing the card.
The effect still occurs even if the Patient Zero Unicorn is chosen as the sacrifice.
A replacement effect is triggered when another effect "would" happen and a new mandatory replacement effect happens "instead".
Multiple replacement effects can trigger in a chain, But a replacement effect will not trigger its own effect.
A specific card type is no longer required for the replacement sacrifice effect. The cards sacrificed are no longer restricted to a card type.