Okaros, Leader of the Spirits

When Okaros, Leader of the Spirits enters the battlefield, each opponent loses 2 life and you
gain 2 life.
{t}, {x}: Choose one:
• Each opponent loses X life and you gain X life.
• Creatures you control have +X/+X and
creatures your opponents control have -X/-X.
Sacrifice Okaros, Leader of the Spirits: You gain
10 life and each opponent loses 10 life.