The Saga starts by turning one of their noncreature artifacts into a 0/4 Wall, just a little bigger than the Dinosaur token you get the next turn
Kess, Dissident Mage or other commanders which can flashback Approach are good because they let you focus entirely on getting copies to the graveyard, instead of having to hold a couple in hand
Some cards give you energy counters, usually on resolution, but some cards add energy during other phases as a static ability, attack triggers, damage triggers, and activated abilities
Does the Commander deck ratio change for budget or competitive decks
Dragonhawk, Fate's Tempest Three generic, two red legendary creature Bird Dragon 5/5 Mythic Rare Flying Whenever Dragonhawk enters or attacks, exile the top X cards of your library, where X is the number of creatures you control with power 4 or greater
Blue sometimes also shuffling your hand in as well and then draws you cards