I recently had a good number of plants die on me (very saddening :c )
I used a regular revive spell, though it costs 30 points, ah! There's no way I can revive all my plants, so I did a little research to see if there were a TC similar to the ones that, for example, pollinate all outside plants, or water all outside plants.
Honestly, I was surprised to see there wasn't one for revives! I think perhaps a Revive All TC should be implemented, even if it were a rare drop. I'd certainly spend my time farming for it haha
I don't really think it needs to be a card. It's actually pretty hard to have all your plants die. They only get needs if you visit the house/area where they are. They only wilt if you leave them with needs. They only die if you leave them wilting. So you have to leave them multiple times without taking care of them. I think a potion would be a better solution to this than a TC since it really shouldn't be something that ever happens more than once to any wizard.
