Underrealm lich incorrectly overrules mill rules
Underrealm lich incorrectly overrules mill rules. I say "incorrectly" because altho i recognize that once there are no more cards in the library Underrealm Lich's ability changes the effect frim drawing a card to "instead look at the top 3 cards of your library" i contest that if a player cannot "look" at the top cards of their library because there is no library then that player should immediately lose the game according to normal mill rules.
If you cant draw then look = if you cant look then lose.
As a side note, i absolutely despise mill decks and my opponent milled himself using Gitrog & Underrealm Lich, but rules need to be consistent
The rules are consistent. Read up on replacement effects and then think how much more complicated you are suggesting they become by providing conditions when they don’t apply