Altars Summoning
Instant
 (Rare)

Until end of turn, whenever a nonblack creature enters the battlefield, if a Vampire is in a graveyard, destroy target creature if it is a Spirit.

Until end of turn, whenever a green creature enters the battlefield, green Humans get -3/-9 until end of turn.

Douglas Myrfors

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Oracle text
Altar's Summoning {BB} |Instant| Until end of turn, whenever a nonblack creature enters the battlefield, if a Vampire is in a graveyard, destroy target creature if it is a Spirit. / Until end of turn, whenever a green creature enters the battlefield, green Humans get -3/-9 until end of turn.