First, the idea of the Fountain of Youth change is to be redundant with Falcius. Falcius is powerful, but awkward. The idea is that “prevent damage” is an effect than Vet doesn’t pay a whole extra mana for. It’s very important that Falcius stay in-tact, but tools be supplied that don’t make it such a hard staple. I get that being on the receiving end of Falcius at it’s best is intimidating. But in practice, it can turn sour quite easily. If Falcius ever does get nerfed, it’ll probably just be to give +1 ATK instead of +2 (assuming Vet ever actually gets out of control.) Vet doesn’t get in-class healing that doesn’t have a permissive element (IE Aymara Healer-), which makes the “Prevent Damage” effect make quite a bit of sense.
Second. I’d actually be more terrified of your “nerfed Nimbus”. Kiting around dropping free Obelysks is far more enticing than having to carefully trade Nimbus’s health for cards. Again, Nimbus is a card that can be outstanding with proper support, but has been overestimated.
The orb weaver cares about targets, Inner Oasis doesn’t target. Oasis would just do what it always does. Whereas, The Wishes, Cosmic Flesh or Astral Phasing would copy them-self onto each other Orb Weaver. The spell-clause is also sortof important because if we get any “ability givers” better than Wood Wen, or attack buffs greater than Primus Fist, Orb Weaver might accidentally create too much pressure with just the two from playing the minion card (if the “friendly spell” clause were nonexistant.)
Would love to see how someone reaches this conclusion though!
Otherwise I probably wouldn’t have replied.