Gabriel, Judge of Hell

When Gabriel, Judge of Hell enters the battlefield and whenever one or more creatures you control deal damage to the monarch, target other player becomes the monarch and gains 2 life.
When the monarch draws a card, gain 1 life and create a 1/1 Sword artifact creature token with myriad and "This card
can't be exiled."
{b}{b}{b}, Sacrifice all other creatures you control: Gain X life and put X +1/+1 counters on Gabriel, Judge of Hell, where X is the sum of the power of the sacrificed creatures. Transfor