Liliana of the Dark Realms
{2}{B}{B}
Legendary Planeswalker -- Liliana
3
[+1]: Search your library for a Swamp card, reveal it, put it into your hand, then shuffle.
[-3]: Target creature gets +X/+X or -X/-X until end of turn, where X is the number of Swamps you control.
[-6]: You get an emblem with "Swamps you control have '{T}: Add {B}{B}{B}{B}.'"
Tithe
{W}
Instant
Search your library for a Plains card. If target opponent controls more lands than you, you may search your library for an additional Plains card. Reveal those cards, put them into your hand, then shuffle.