Phyrexia: All Will Be One Commander

Adriana, Captain of the Guard

Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.)
Other creatures you control have melee. (If a creature has multiple instances of melee, each triggers separately.)

Dominaria United Commander

Commander 2020

Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked with a creature this combat.)
Other creatures you control have melee. (If a creature has multiple instances of melee, each triggers separately.)

"My sword is pledged to the defense of this city, not to the throne or this usurper."