Questing for two lore with Oswald is going to be good enough in a lot of situations, and Gyro's 1/4 stat line makes him an annoyance for the enemy to remove
However, it also meets fans highest expectations, not just in terms of the strategic depth, but also regarding the quality of the cards
For me, the tipping point is in the card type creatures are just much better than sorceries, adding the utility of attacking and blocking, paying sacrifice and convoke costs and everything else you need a body for in Magic
The new card styles will be available starting with cards from the next two upcoming sets, War of the Spark and Core Set 2020, but Wizards will be adding styles to cards from earlier sets as time goes on
The preferences of the players determine the value of trading cards