There are countless cards that let you trade life for other resources, and Bolass Citadel is one of the most (in)famous
Even if one of the lands you sacrifice is both a Swamp and a Forest, you have to sacrifice another land that is a Swamp or a Forest
And the buyer protection policy covers you if something arrives damaged or not as described
The burning question of course for the Vorthos community is: will the set have seven dwarves
While Martyr + [casthaven]Proclamation of Rebirth[/casthaven] is the engine to a more controlling build of Soul Sisters, here it is sacrifice this to turn on [casthaven]Serra Ascendant[/casthaven] or make target burn player cry. Its the most all-in card in this list and while it does synergize well with multiple cards in the deck, its the first thing I would cut if there were no budget considerations
Additionally, if your opponent has a heavily damaged Pokemon on the Bench, you can bring it forward for an easy Prize Card