Incubator tokens enter the battlefield with the +1/+1 counters already on them, so if, say, you are controlling your opponents turn, theres no window for you to transform their tokens before the counters are on them
You can sacrifice that Junk token to impulse draw the top card of your deck, effectively letting you draw extra cards for each attack
turn it into a tuner or turn it into and a non-tuner, it becomes one of these two until the end of this turn
Typically the cards that will end up having some of the biggest returns are the ones that fly under the radar for a long time
By the way, magicians quite often use this style of card shuffling to demonstrate magic numbers, which looks quite impressive
Less than 1% chance of pulling a hyper rare card