Gameplay is decently broad and deep for an early 4X. Being able to magically "change the rules" on the fly adds a lot of options for replayability. You can play a low-magic warlord like normal, or rely on summoned creatures, or throw fire and lightning to slay armies, or alter the overland to raise your empire's wealth while eroding others. It is missing modern elements like spying, religion, cultural pressure. It's mostly either conquer the world, or cast the one grand spell that banishes all your opponents. The war of conquest happens on two planes of existance at once, and there are spells to hop between the two.