Zoo paladin has a real chance of happening. This is very easy to set up and get something good off of.
It is not easy enough. You will take multiple turns and your opponent knows he has to clear.
If you plan it right, and summon most of the required minions on the same turn (which isn't that difficult) you can definitely pull it off. And you don't need to spend the mana on the same turn either.
if this hits two minions it would be worth it for the mana cost but not for the card spot cost. if you get it from a spell discover mechanic it would be really good but not sure if it's worth putting in your deck.
Yo can we agree that Mark of the Lotus was legit broken tho ?
I think that card is fine, and generally speaking Paly always had more than enough low-cost creatures draw / generation with spells to be able to proc it almost instantly. If he can't do so this expansion he'll probably be able to do so with the next (or at least in wild), then the sidequest attribute of this card's gonna be irrelevant.