If you dont need the mana this turn, grab the Snowfield Sinkhole which will enter tapped
It lets you dump all of your mana into an X-spell that ostensibly converts all that mana into damage
I hope you'll stick with me as we brave the rest of 2020
We can work with that, and it isnt like extra copies are actually dead
The Liliana we see in Core Set 2021 is Liliana, Waker of the Dead by Anna Steinbauer, and she was concepted as a more pensive, perhaps even remorseful Liliana, with the pose and background echoing Liliana, Heretical Healer painted by the incredible Karla Ortiz according to a summary of the art description shared on Twitter
You can also use the card to generate mana immediately, which has gotten other cards banned from formats in the past