Guarded Rest

Enchant Creature. Enchanted creature does not
untap during its controller's next untap step.
When Guarded Rest enters the battlefield, create
a legendary 3/3 dog creature token named Solo
The Devoted with vigilance, haste, menace, reach
and "gains +4/+4 if player controls enchanted
human creature." Solo The Devoted can only be
controlled by owner of enchanted creature.
"Their affection is timeless, their devotion is ageless,
and their love is forever."