Having zero lands that enter the battlefield tapped means you have fifteen sources of green mana on turn one, which makes both Elvish Mystic and Experiment One much better than in other versions
Beyond just being a great card when played straight, Estrid also has combo potential: Estrid, the Masked + The Chain Veil + enchanted lands lets you produce infinite mana by using her -1 to enchant the Veil, then using the Veil to +2 multiple time to untap Veil + lands to go up in net mana
However, they will cost players Shop Tickets, one of many types of currencies in-game
Sure, that means they can counter this, but usually this gets dropped when they tap out on your end step for something like a Memory Deluge
Dungeon Master as Commander The Dungeon Master is a strange card a planeswalker whose starting loyalty is determined by rolling a D4 and adding 1