Underrealm Lich
Creature — Zombie Elf Shaman
If you would draw a card, instead look at the top three cards of your library, then put one into your hand and the rest into your graveyard.
Pay 4 life: This creature gains indestructible until end of turn. Tap it.
"You've strayed, overworlder."
Anna Steinbauer
Ravnica: Clue Edition (CLU)
• #215Rulings
You can activate Underrealm Lich's last ability even if it's already tapped. It can't be tapped again, but it still gains indestructible.
(wotc • 2018-10-05)
Underrealm Lich's first ability applies even if you have fewer than three cards in your library. If you have no cards in your library, you can't lose the game for trying to draw a card from an empty library.
(wotc • 2018-10-05)
If an effect instructs you to draw multiple cards, each draw is performed—and replaced by Underrealm Lich's ability—one at a time. This means that if you're drawing two cards, you'll look at the top three cards of your library, put one into your hand, put the other two into your graveyard, and then repeat the process with the next three cards in your library.
(wotc • 2018-10-05)
Rulings
You can activate Underrealm Lich's last ability even if it's already tapped. It can't be tapped again, but it still gains indestructible.
(wotc • 2018-10-05)
Underrealm Lich's first ability applies even if you have fewer than three cards in your library. If you have no cards in your library, you can't lose the game for trying to draw a card from an empty library.
(wotc • 2018-10-05)
If an effect instructs you to draw multiple cards, each draw is performed—and replaced by Underrealm Lich's ability—one at a time. This means that if you're drawing two cards, you'll look at the top three cards of your library, put one into your hand, put the other two into your graveyard, and then repeat the process with the next three cards in your library.
(wotc • 2018-10-05)