Making those maps as full art lands compliments the card illustrations to create an immersive experience for players
For those not in the know, one of the major deck archetypes in Magic: The Gathering (known as 'control') often makes ample use of spells designed to counter their opponents' cards, nullifying their effects and sending them straight to the graveyard
In Commander, the card will largely be overshadowed by original Sneak Attack, but decks that want redundancy on the effect will probably run both
What was the second change
We dont have room for a full refresher on dungeons today, but you can always check back to my mechanic spotlight article if you need to swot up on how these work
It basically turns your setup effects into card advantage, so its a great pick for spellslinger or control builds that constantly filter through the top of their deck