Charizard's Base Set 2 card sells for a decent price even if the card happens not to be graded
In WB, your better options are those like Silverquill, the Disputant, as you can double up on Erode and Path to Exile on your small creatures to ramp, and run WB reanimation engines, too
There are classic enchantment staples in the deck, along with a healthy mix of counterspells and boardwipes like Terminus
Energy counters represent aether, magical energy that is found throughout the Multiverse, and is an integral part of the ecosystem on Kaladesh
Esper Sentinel is a 1/1 Human Soldier for one that allows you to draw a card whenever your opponent casts their first non-creature spell in a turn
Cavalier of Flame Cavalier of Flame does its best to set you up for success, but ultimately ends up being too costly for its pay off