Winged Larval Host

Hatch {b}{u}
flying
When Winged Larval Host enters the battlefield,
each opponent must sacrifice a non-land
permanent they control.
If Winged Larval Host was hatched, when it gains
the ability: "Sacrifice Winged Larval Host: Draw
a card, and put four 1/1 green Insect creature
tokens with flying into the battlefield."