When no opponent does, draw a card
Thus, I have included a number of Swamp matters dorks and effects in here
Once it's in play, you can keep getting landfall triggers, which tap your opponent's creatures and give them stun counters , pointing out the control aspect of blue mana
This matters far more in Sealed than players expect, because Sealed pools often land in the uncomfortable zone of Im close to enough Merfolk/Elves/Goblins, but not quite. Changeling turns almost into functional, and it increases the reliability of creature-type checks across the set
Lands (16) Spells (44) 4 Brainstorm 4 Vampiric Tutor 1 Mystical Tutor 2 Yawgmoth's Will 4 Mana Vault 4 Dark Ritual 1 Megrim 4 Memory Jar 4 Defense Grid 4 Tinker 4 Mox Diamond 4 Lotus Petal 4 Lion's Eye Diamond Sideboard Like all of the most broken decks in Magic history, it featured two Yawgmoths Wills, because there was plenty of time to find one you know, later in your first turn
Deathrite Shaman This is a card that is too good for Modern, so you can imagine Im a big fan in casual formats