UU Game Terminology - Flyers
From Unstable Games Wiki
"Flyers" refers to the Magical Unicorns that have the "Flying" in the card title, All cards contain the effect text;
"If this card would be sacrificed or destroyed, return it to your hand instead."
Specific Card Rules and Information
- The card must be sacrificed or destroyed to have the effect to return the card to Hand trigger (instead).