Theres diminishing returns on adding more new resource tokens to Magic , but Blood seems very much like it will be a niche, Vampire-specific mechanic rather than something like Treasure, which goes in every set
That matters for expectations
With Vehicles, we can use this ability to grow Elves that might not tap themselves
Now, after a few weeks of getting to build and play with these cards in Commander, they've somehow exceeded my expectations and have had a subtle but large impact on how I build Commander decks
The trade-off of getting a Basic Pokmon to do it is quite acceptable but because we still have Radiant Greninja in the format, I think people will choose Radiant Greninja over Radiant Blastoise because, in this format, card draw is very important