The list of playable, competitive cards that successfully stop cascade triggers from resolving is pretty small
1 Kellogg, Dangerous Mind
Besides the obvious need to diversify battlefield sweepers due to Meddling Mage, the format has seen a record influx of Bant Spirits
First thing's first, once you pick up your first deck of Magic: The Gathering cards, you're now officially a plane-hopping battlemage known as a Planeswalker
Little John, Resourceful Outlaw has Shift four, meaning that it can be played for four ink instead of six if you put it on top of another Little John card
Both Esper and Grixis explore the card drawing design space, and drawing from a Saga and having all of your mana ready to go with your full grip is an advantage some players don't fully realize the benefit of until it happens to them (I'm telling on myself)