It is meant for Avatar's Jumpstart, but only got printed into Collector Boosters, as in, one TLE uncommon shows up in a given Avatar Collector Booster, and that slot is shared with 4 scene cards, 14 cards from the beginner box and 32 other jumpstart uncommons
And if you do like taking risks, its worth remembering that winning the game at 1 life is the same as winning at 40
Just keep casting your big creatures and so long as they have power 4 or greater, you'll be able to draw a card when they enter the battlefield
That method was fine for Fallen Empires but we've got better, faster and more dependable ways to create Saprolings these days
Luckily, counters are extremely straightforwardthey add to (or subtract) from a creatures power and toughness