Flash Rule 702.8 Glossary

A keyword ability that lets a player play a card any time they could cast an instant. See rule 702.8, “Flash.”
Flying Rule 702.9 Glossary

A keyword ability that restricts how a creature may be blocked. See rule 702.9, “Flying.”

Rulings (1)

September 24, 2021 Wizards of the Coast
You choose whether to return a creature to your hand and which creature to return as Loyal Gryff's triggered ability resolves.

Other Printings

Innistrad: Midnight Hunt (mid)