2019-11-12 : Each mode uses a card name as shorthand for its text. Growth Charm’s name is still Growth Charm, no matter how it grows.

2019-11-12 : Giant Growth means “Target creature gets +3/+3 until end of turn.”

2019-11-12 : Rampant Growth means “Search your library for a basic land card and put that card onto the battlefield tapped. Then shuffle your library.”

2019-11-12 : Regrowth means “Return target card from your graveyard to your hand.”