You venture into the dungeon just like you do in any other format
There is a single deck with the Reality Fracture set, officially, focused on two themes: Tokens and warping
So Common cards and Uncommon contain more vanilla cards (with no rules text) or cards with just one keyword, up to 5 or 6 ink cost at max
Wizards of the Coast did try to compensate for this by increasing the Mana tax as you increase Esper Sentinels power, but any Auras or buff spells after often reserved for the Commander in Voltron style decks
It also works alongside Urza, Lord High Artificer and other cards that want loads of cheap artifacts
This card tends to see play in decks that generate a lot of tokens because they can station the turn they come into play and later potentialize this land, or in decks that can easily cheat a big creature into play