Only their abilities can really be disrupted, and only by specific solutions which will only make up a small % of opposing decks
It should include Play and Collector boosters, and Commander decks, but with well over a year until we start seeing more of it, Magic could be very different by then.
Mulligan You want a starting hand with some low-cost characters for turns 1 and 2, and ideally a few Heros and Hero-buffing cards
Whenever equipped creature attacks, destroy target creature
Lets dive into the story and find out
For example, in a deck with minimal tutoring, I might run 10+ card draw spells, but if I have tons of tutors then I can trim my card draw down to just the 5 best options