You basically have to play a deck with no other minions except these and on turn 6 or whenever you draw the pieces you play both Imprisoned Satyr you get your 0 mana Malygos then use Germination on it twice for a total of 15 spell damage giving you 32 damage with both Moonfire
Theres some other memes you could pull off too. You could use 2 Innervate and a Swipe for 19 extra damage
You definitely need minions in the deck around a quest druid base cos you need stuff like Oasis surger to survive, you draw through your deck quite quickly with nourish and rising winds. Druid spells can't deal with big stuff so spells only would simply fail. This would be similar to the Malygos quest druid in SoU but instead of dreampetal, innervate, floop you have the 2 Satyrs. Elise would be essential since you want more than 2 moonfires in most games, germination wouldn't work as well unless it can be discounted as well.
I'm guessing the discount wouldn't target 0 cost minions (Same as dreampetal florist) so if your only minions in hand are Malygos and Elise then they would both be discounted once so you can pull off the combo in 1 turn with 44 damage (2 Malygi and 4 Moonfires). There are probably so many meme ways to make an OTK tbh, I think i was too focused on trying to make the deck somewhat viable cos Malygos quest druid was one of the most fun decks i've ever played and i want it to work again.
Jepetto Joybuzz might be an option in a minion-light deck. You may also want to look into Crystalsong Portal as a means to provide some minions. If you're running very few minions, it becomes a very strong turn 2/3 play as most of the mediocre Druid minions are rotating.