+2: Surveil 2. Each opponent mills 2.
-1: Lazav becomes a copy of target non-Lazav planeswalker or planeswalker card in a graveyard until end of turn, except his name is still Lazav, Face in the Crowd. You may activate his loyalty abilities an additional time this turn.
-10: You get an emblem with “At the beginning of your first main phase, you may search your graveyard, hand and/or library for a planeswalker card and exile it. If you search your library this way, shuffle. You may activate a loyalty ability of a card exiled with this emblem without paying its loyalty cost.”
Had two ideas on how to represent Lazav's shtick as a planewalker. Put them on the same card for ease of posting
(Third idea was planeswalker-changeling, but that does basically nothing)