Ono, Titan of Decay's equality

When Ono enters the battlefield, sacrifice it
unless it escaped.
Whenever Ono enters the battlefield or attacks,
each player sacrifices a permanent, then you gain
1 life for each nonland permanent sacrificed
this way.
Escape—{b}{b}{g}{g}, Exile five other cards from
your graveyard. (You may cast this card from your
graveyard for its escape cost.)