On top of that, it reads: Whenever one or more Dragons you control attack, draw that many cards, then you may put a permanent card from your hand onto the battlefield. Everyone likes free stuff, and that free stuff is even better if its a 15-mana Earthquake Dragon
For any players worried about their stuff removed, this land represents swamps and mountains and is formidable
Modern Horizons 2 Variants Foil: Subtlety (Borderless) NM EX VG G Buy It Certified Graded A certified graded Magic card is sealed in a plastic case to preserve its condition
Then when a creature you own but doesn't control attacks, you draw a card, so he's card draw in the Command Zone, and has an entire archetype of giving away horrible stuff that will draw you the cards while hurting those he give them away too
Korvold's deck is primarily meant to pump Korvold itself into a massive flying threat as its plan A, but the deck also has a powerful plan B
This could be related to size, like how Brotherhood's End cant kill most large creatures, and Dusk / Dawn ignores smaller creatures