Irias, Demonic Drafter

When Irias, Demonic Drafter enters the
battlefield Create x 1/1 human cult members
{4}:choose target opponent and a creature
The opponent may sacrifice a creature to give the
chosen creature indestructible if they don’t they
Lose 5 life and discard 3 cards.
Whenever a creature attacks an opponent control attacks
It gains indestructible until end of turn if it is not attacking you