The one time clause seems weak, but you are playing a 2 drop 3/2 at uncommon, and that is an aggressively costed creature
It's ability also means that, in combination with a powerful creature, Sylvan Safekeeper can help insulate key pieces from removal
This card was a notable competitive powerhouse upon release, featuring in both decks in the Finals of the 1998 World Championships with Brian Selden's Recurring Nightmare deck taking the top spot with two main deck Firestorms helping to clear out opposing threats
With each series, there are always going to be cards that grab peoples attention, be it for a character in a new outfit, or a favourite character getting some time in the spotlight
For example, if a player other than Ludevic's controller lost 2 life and then gained 8 life this turn, the player whose turn it is may draw a card