Having creatures enter the battlefield with at least one +1/+1 counter gets a lot of support cards rolling, be it Rishkar, Peema Renegade or Atraxa, Praetors' Voice, and sets up payoffs like Inspiring Call
For example, here, a judge pointed out a legitimate omission in the rules- the CR defines Trinisphere as an additional cost, which it's not supposed to
One of the standard payoffs for opponents drawing extra cards is you drawing an extra card, which you can do with piggyback cards like Faerie Mastermind, The Council of Four, and Trouble in Pairs
We called them shock lands because they deal 2 damage to you as a Shock would
For example, if you wanted to play Mythos of Nethroi in your deck at the cost of foregoing the extra effect, you wouldnt be able to use it
And, once you do have Equipment, his two Equipment bonuses are pretty incredible