elden beast

indestructible, flying
when elden beast enters the battlefield, all opponents creatures cannot attack or block until their next turn
elden beast cannot lose indestructible and the player cannot take damage unless the opponent has 1 or less creatures
elden beast can only be damaged by 1 spell per turn
when elden beast is killed, opponent gains 20 health and can play 3 creatures of their choice from any hand for 0 cost and set them onto the battlefield untapped with vigilance