It isn't really worth it if you have to craft all 3 of them. You also have to remember that the Wolf is going out of rotation in like... 20 or so days? (Not exactly sure. To shorten it: Wolf rotating very soon.) Unless you have a real interest in climbing or know you're going to be using the cards you made a lot, I recommend just saving your vials.
Insect Lord is good for controlling the board, but honestly... I don't think it is 100% necessary for an Elephant deck. It'll definitely help the deck a lot with keeping the board clear, but I'm pretty sure you might have several other options for stalling out the game while keeping your hand fairly full than dropping Insect Lord to destroy followers.