Yes it is limited to instants or sorceries, but there are also plenty of ways to reset sagas
In this case, once again, the ideal answer is speed, but this isnt always possible
While Ral Zareks ability is generally more powerful than casting Time Stretch, the marginal utility of a fifth turn over a fourth is generally not as great as the first extra turn over zero
The correct text will read: Return chosen character or item with cost 2 or less to their players hand. If the card stayed as it was, the effect isnt choosing anything, so would be able to get around Ward
At the beginning of your upkeep, return target permanent card with mana value 3 or less from your graveyard to your hand
* Due to the nature of construction decks, multiple of the same cards are included