Abzan introduces Endures, which grants creatures either bonus power and toughness, or creates new spirit tokens, while the Jeskai introduce Flurry, bonuses introduced if a player casts a second spell in their turn
If theres no drop in Winter set sales, and if theres no drop in Pro Tour viewers (or participation), then it would be hard to convince WotC there is a problem, which would mean wed be seeing single week previews for Winter sets for more years to come
Secret Lair has also been used to introduce cards from other brands, reimagining existing cards with new art, names, and flavor to fit the crossover theme
Luckily, the stat boost from the equipment goes a long way towards making your puny creature a legitimate threat
Sometimes the pulls werent worth much, but then the next pull would be twice the value