Symmetra, Order Architect

+1: Until your next turn, whenever a creature attacks you or a planeswalker you control, draw a card.
-3: Create a 0/4 colorless Servo artifact creature token with "Whenever this creature blocks, return the creature it blocked to its owner's hand.
-6: You get an emblem with "At the beginning of your upkeep, you may search your library for a creature or artifact and put it onto the battlfield."