You could easily trade your one- and two-drop in Limited and then win the game with this massive card advantage and tempo swing on turn three
3 Grass Energy: Guardians Rising (Secret Rare, 167) $26.46 Luscious Golden Plantation The Sun & Moon era mixed up a bunch of classic elements of the TCG in a new way, including the introduction of GX Pokemon and rainbow rare cards as well as the still around to this day golden secret rare Energy cards
But I'll let you make that call
When you play this card, you may discard another card from your hand
While technically only Liliana's -3 ability qualifies here, the true reason she's made the number two slot is that she easily slots into any mono-black deck imaginable, providing a means to search for a land every turn while pumping her loyalty counters, a means to either hit for the win or remove a problem creature with her -3, or an emblem that will make sure you have the most mana at the table no matter what
It is easier to slip round countermagic but harder to cast and have out at a useful time
