Rhaast the Darkin Scythe

+1: Target creature gains lifelink and unblockable until end of turn. Whenever you gain life, put that many counters onto Rhaast the Darkin Scythe.
-3: Destroy target creature an opponent controls. If that creature card is sent to the graveyard this way, exile it instead.
-10: Target player gets an emblem with "All creatures you control lose hexproof and are dealt double damage from all sources they don't control."