Moraug's design is a mess.
Since the untap comes at the start of the extra combat, if you play a land before your first combat (like you want to for your OTHER landfall creatures) your creatures won't be untapped for your extra combat.
Any way you time an untap is messy and going to cause some feel-bads.
Instead, why not "tapped creatures you control can attack as though they aren't tapped?"
Gonna throw out my #mtgikoria#vorthos theories based on minimal information because I like them and learning more first might preemptively refute them.
Ikoria needs to be eaten by the eldrazi titans.
1/x
So some neo-gatewatch must find a way to bring back Ulamog and Kozilek and free Emrakul so they can go fix Ikoria and stop the problem there from destroying the entire multiverse.
8/8
A friend connected us with a family with a trans son the same age as our daughter.
She just came home from a play date/clothing swap and is bouncing off the walls.