But WotC did much more than make up magic calculus to express the flavor of this blue-red dragon
Counterspell is the more powerful and more iconic card however Force Spike performs a more important role for blue in an area less well catered for than Counterspell
Reyhan, Last of the Abzan is a natural partner pairing for the dog commander to work as an Abzan commander leaning heavily into +1/+1 counter synergies
Lord of Change draws 3 cards when it enters the battlefield, making it a a target for blink effects
This is very different from, lets say, custom alter cards, as the art on those is the property of the people who make them, and also, you know you arent buying a real card. Play it safe if you print the back of an MTG card and put a custom-altered version on the front, and restrict its use to kitchen table rules
Any two or three drop follow up is a big old swing and will let you grab control of the game