This doesn't matter to Volo, because he triggers when the spell is cast, not when the spell resolves and the creature enters the battlefield
Now with the brand new Airfoil item youll also be able to reward yourself with some free card draw by exerting it on your turn
The short version: you make the custom card, we handle the part that requires expensive machines and obsessive consistency
If your main goal is simply to get more packs or chase high-value singles, your money stretches further with a normal bundle or buying boosters
While not as expensive (mana-wise) as Emrakul, Ulamog, the Defiler still comes in at an impressive ten mana to cast
Heliod, the Radiant Dawn is a very straightforward commander in this way, costing a fairly cheap four mana to transform him, or three mana and two life, to compleat the poor god, turning him into a twisted, Phyrexianized version of himself