The Demogorgon

At the beginning of your upkeep create an
enchantment token named Portal with "Tap target creature: at the beginning of your next upkeep sacrifice this permanent under an opponents control"
When The Demogorgon attacks, if defending player controls a Portal token The Demogorgon gains
hexproof until end of turn.
{1}{g}:Scry X where X is the number of players who control a Portal token and a creature.