Khora, Mistress of Entrapment

When Khora enters, create a 2/2 black Venari legendary creature token with deathtouch and "Whenever Khora gains one or more +1/+1 counters, Venari gets that many +1/+1 counters."

Whenever you attack with two or more creatures, create a Treasure token.

Whenever you use one or more mana from a Treasure token to cast a spell, Khora gets that many +1/+1 counters.