With your access to Sultai mana and the ability to cast from your yard, milling out your deck is no problem
Not only is Land Tax arguably the single best card drawing spell in the history of white, since it tutors for three basic lands a turn, but it now includes this land you may have heard of called Wastes
Labyrinth of Skophos may cost more mana to activate, but unlike Maze of Ith, it actually taps for mana
A handy EDH deckbuilding tip is to look for artifact destruction thats either flexible, like Tear Asunder, or synergizes with your game plan, like Sundering Growth in token decks
It doesn't copy whether that permanent is tapped or untapped, whether that permanent has any counters on it or any Auras and/or Equipment attached to it, and it doesn't copy any non-copy effects that have changed that permanent's power, toughness, types, color, abilities, or so on