It takes a little work to get this good boy going, but counters decks love cheap cards that makes spells like Luminarch Aspirant and proliferate spells much, much stronger
Still, its a great opportunity to know more about the game and its rules and interactions
Sprouting Goblin The Arena rebalanced version of Sprouting Goblin removes the you pay before the card draw ability
Ultimate Magic: Holy may be the best of the bunch here
The foil glimmer card Belle - Mechanic Extraordinaire, has a very high cost of 9 ink to play her, but for good reason
You have so many different creatures at your disposal, and most will come with some sort of mechanics attached, such as Reach, Vigilance, Deathtouch, Menace, or Trample, while others are token generators