A card that costs 1 less for each creature you control is said to have affinity for creatures. There are enough artifact-themed sets in rotation at any given time that its as good a time as any to study up on affinity
Facilier Charletan Uncommons: Moana Chosen By The Ocean, Beast Hardheaded, and You Have Forgotten Me Rare or above: Maleficent Uninvited (Rare), and Lady Tremaine Wicked Stepmother (Rare) Foil: Pumbaa Friendly Warthog (Common) Another standard pack with the 2 Rares and Common Foil
Aggro Midrange decks have a unique positiontheyre slower than aggro but faster than control, so you have to play a bit of both roles
Going forward, for each round of play after the first, each player will draw a card at the beginning of their turn
Compare to the beloved Werebear
Reject Imperfection Go read what I had to say about Experimental Augury again