Creature â Hyena
Trusty Companion can't attack alone.
Trusty Companion can be declared as an attacker only if another creature is declared as an attacker at the same time. Once itâ€™s attacking, removing the other creature wonâ€™t cause Trusty Companion to stop attacking.
In a Two-Headed Giant game, Trusty Companion can attack along with a creature controlled by your teammate, even if no other creatures you control attack.
If you control more than one creature that canâ€™t attack alone, they can attack together, even if no other creatures attack.
If a creature that canâ€™t attack alone also must attack if able, its controller must attack with it and another creature if able.
Although Trusty Companion canâ€™t attack alone, other attacking creatures donâ€™t have to attack the same player or planeswalker. For example, Trusty Companion could attack an opponent and another creature could attack a planeswalker that opponent controls.