[+1]: Target player discards a card.
[−2]: Search your library for a card, then shuffle your library and put that card on top of it.
[−8]: Put all creature cards from all graveyards onto the battlefield under your control.

[+1]: Search your library for a card named Nissa's Chosen and put it onto the battlefield. Then shuffle your library.
[+1]: You gain 2 life for each Elf you control.
[−7]: Search your library for any number of Elf creature cards and put them onto the battlefield. Then shuffle your library.