If a new player is looking to upgrade Veloci-Ramp-Tor then Pantlaza, Sun-Favored is the obvious best choice of commander: it's extremely easy to pilot and discover is a crowd-pleaser
The deck is extremely aggressive and features a number of efficiently-costed creatures with powerful abilities to put early pressure on your opponent
So, a card that costs 2 green mana and 3 mana of any color has a CMC of 5
Youd have to put tons of defenders and creatures with high toughness in your deck, but theyre always cheap and great for this budget Commander deck
Also keep in mind that if you successfully import a deck, you may still need to make sure you've selected the proper format (if you import a Timeless deck but set it as a Standard deck, you'll get an Invalid Deck error message)
There's a good reason why this is one of the most favored Commander options from the pre-con deck, based on early reactions.