opponents draw cards mtg Five essential card for Commander Scrawling Crawler (Foundations Promos)

Some trigger when something else happens during the battle e.g

We'll be keeping our eyes on Handshake Moxfield, ChannelFireball Ultimate Guard, Moriyama Japan, Sanctum of All, and the three "Heavy Play" teamsWorldly Counsel, Cosmos, and Rampant Growth

While Standard presented the challenge of unfamiliarity, Modern had the opposite problem

Magic: The Gathering is the world's first-ever trading card game, and ever since its August 1993 launch, countless card game lovers and fantasy fans have been collecting, trading and playing with countless Magic cards

By the way: Planar games don't have to be Commander games

Since it phases out, it can save you from exiling removal like Farewell