Wilderness Reclamation is going to have a distorting influence on the popular cards in the format, as players seek to adjust their decks to have more counterplay against it
You choose the targets and announce how the +1/+1 counters will be distributed as you put Quirion Beaastcaller's second ability on the stack
Still very playable but not as good as it is in other decks and other formats
For Incubator tokens, this won't include any +1/+1 counters, so this may result in the creature immediately dying
Another difference between level up and cards like Evolved Sleeper is that once a player responds to the level up activation, the level up may not be paid for again as a response to this response because of the sorcery speed of the keyword
We do want to be dealing a lot of damage (and a 5/5 hits hard), but we want to do it quicklyand hopefully spend less mana to cast our threats than our opponent does to answer them (and vice versa)