We had a blast during stream today playing this and the other Infectious Sporeling decks! For this one, the idea is to play the quest and Libram package as normal, but once you've completed the quest, you'll be able to drop Infectious Sporelings and summon copies of them. Also, once Libram of Wisdom is 0 cost, you can generate a bunch more by copying the minion you buffed, but be careful that you don't overdraw if your opponent kills them...

You can make huge sporelings (or anything else for that matter), but if the opponent trades into your buffed minions, they will transform into non-buffed sporelings, and you lose any Librams of Wisdom used on that minion. The games are hilarious fun though!

We've got a gameplay video highlighting how this works at https://youtu.be/3zXR6x2DANs if you're interested.

Do note, the winrate is terrible, so only experiment if you're looking for bizarre games! :D